1.12.1

1.12.1 (2024-04-11)

Bugfixes

tools

• (formatter) [regression] Fix formatter with whitespace before closing parenthesis (#14471, thanks @straight-shoota)

Infrastructure

• Changelog for 1.12.1 (#14472, thanks @straight-shoota)

1.12.0

1.12.0 (2024-04-09)

Features

lang

• Allow multiple parameters and blocks for operators ending in = (#14159, thanks @HertzDevil)

stdlib

• (concurrency) MT: reduce interleaved backtraces in spawn unhandled exceptions (#14220, thanks @ysbaddaden)
• (concurrency) Fix: opening/reading from fifo/chardev files are blocking the thread (#14255, thanks @ysbaddaden)
• (concurrency) Fix: Atomics and Locks (ARM, AArch64, X86) (#14293, thanks @ysbaddaden)
• (files) Add IO::FileDescriptor::Handle (#14390, thanks @straight-shoota)
• (macros) Add macro methods for lib-related nodes (#14218, thanks @HertzDevil)
• (macros) Add macro methods for Primitive (#14263, thanks @HertzDevil)
• (macros) Add macro methods for TypeOf (#14262, thanks @HertzDevil)
• (macros) Add macro methods for Alias (#14261, thanks @HertzDevil)
• (macros) Add macro methods for Asm and AsmOperand (#14268, thanks @HertzDevil)
• (macros) Relax delegate's setter detection (#14282, thanks @HertzDevil)
• (numeric) Add BigRational#%, #tdiv, #remainder (#14306, thanks @HertzDevil)
• (runtime) [experimental] Add ReferenceStorage for manual allocation of references (#14270, thanks @HertzDevil)
• (runtime) Add MSVC invalid parameter handler (#14313, thanks @HertzDevil)
• (system) Add Signal#trap_handler? (#14126, thanks @stakach)
• (system) Thread: set name (#14257, thanks @ysbaddaden)
• (system) Add Process.on_terminate (#13694, thanks @stakach)
• (time) Add support for Etc/UTC time zone identifier without tzdb (#14185, thanks @femto)

compiler

• Add CRYSTAL_CONFIG_CC compiler config (#14318, thanks @straight-shoota)
• (cli) Respect NO_COLOR in the compiler (#14260, thanks @HertzDevil)
• (cli) Respect --static on Windows (#14292, thanks @HertzDevil)
• (cli) Allow --single-module and --threads for eval and spec (#14341, thanks @HertzDevil)
• (codegen) Add --frame-pointers to control preservation of frame pointers (#13860, thanks @refi64)
• (codegen) x86-64 Solaris / illumos support (#14343, thanks @HertzDevil)
• (interpreter) Support @[Link]'s DLL search order in the interpreter on Windows (#14146, thanks @HertzDevil)
• (interpreter) Automatically detect MSVC tools on Windows interpreter (#14391, thanks @HertzDevil)
• (parser) Allow calling #[]= with a block using method syntax (#14161, thanks @HertzDevil)
• (semantic) Change short_reference for top-level macros to ::foo (#14203, thanks @femto)

tools

• Add crystal tool flags (#14234, thanks @straight-shoota)
• (formatter) Add more whitespace around ProcLiterals (#14209, thanks @HertzDevil)

Bugfixes

lang

• (macros) Remove extra newline in top-level FunDef's string representation (#14212, thanks @HertzDevil)
• (macros) Remove T* and T[N] macro interpolation behavior inside libs (#14215, thanks @HertzDevil)

stdlib

• (collection) Fix Hash#update when default block also adds given key (#14417, thanks @HertzDevil)
• (collection) Fix Hash#put_if_absent putting duplicate keys (#14427, thanks @HertzDevil)
• (concurrency) Reserve stack space on non-main threads for crash recovery on Windows (#14187, thanks @HertzDevil)
• (concurrency) Add memory barrier to Mutex#unlock on aarch64 (#14272, thanks @jgaskins)
• (concurrency) init schedulers before we spawn fibers (#14339, thanks @ysbaddaden)
• (files) Make FileUtils.mv work across filesystems on Windows (#14320, thanks @HertzDevil)
• (llvm) Use correct string size for LLVM::Type#inline_asm (#14265, thanks @HertzDevil)
• (llvm) Fix System V ABI for packed structs with misaligned fields (#14324, thanks @HertzDevil)
• (networking) OpenSSL 3.x reports unexpected EOF as SSL error (#14219, thanks @ysbaddaden)
• (numeric) Make equality between Complex and other numbers exact (#14309, thanks @HertzDevil)
• (numeric) Fix #hash for the Big* number types (#14308, thanks @HertzDevil)
• (runtime) Do not allocate memory in the segmentation fault signal handler (#14327, thanks @HertzDevil)
• (runtime) Fix crash stack trace decoding on macOS (#14335, thanks @HertzDevil)
• (runtime) Crystal::RWLock should be a struct (#14345, thanks @ysbaddaden)
• (runtime) Fix min_by? in IOCP event loop #run_once (#14394, thanks @straight-shoota)
• (serialization) XML::Reader: Disallow attributes containing null bytes (#14193, thanks @HertzDevil)
• (serialization) Always call LibXML.xmlInitParser when requiring XML libraries (#14191, thanks @HertzDevil)
• (system) Fix macro Crystal::LIBRARY_PATH.split when cross-compiling (#14330, thanks @HertzDevil)
• (system) Add SA_RESTART flag to sigaction syscall (#14351, thanks @ysbaddaden)
• (text) Add Nil return type restriction to String::Formatter#consume_substitution (#14430, thanks @straight-shoota)

compiler

• (cli) build --no-codegen output file name error (#14239, thanks @apainintheneck)
• (codegen) Do not handle inline assembly with "intel" flag as AT&T syntax ([#14264], thanks @HertzDevil)
• (codegen) [breaking] Respect alignments above alignof(Void*) inside union values ([#14279], thanks @HertzDevil)
• (codegen) Fix stack corruption in union-to-union casts ([#14289], thanks @HertzDevil)
• (codegen) Don't copy DLL to output directory if file already exists ([#14315], thanks @HertzDevil)
• (codegen) Fix Proc#call that takes and returns large extern structs by value ([#14323], thanks @HertzDevil)
• (codegen) Never discard ivar initializer inside .allocate and .pre_initialize ([#14337], thanks @HertzDevil)
• (codegen) Use separate names for constant and class variable internals ([#14445], thanks @HertzDevil)
• (interpreter) fix fiber's resumable property ([#14252], thanks @ysbaddaden)
• (interpreter) Ensure all constants only have one initializer in the interpreter ([#14381], thanks @HertzDevil)
• (interpreter) Handle NaN comparisons in the interpreter ([#14441], thanks @HertzDevil)
• (interpreter) Check UInt16#to_u8 for overflow in the interpreter ([#14436], thanks @HertzDevil)
• (interpreter) Fix interpreter internal overflow for UInt128#to_f32 and #to_f32! ([#14437], thanks @HertzDevil)
• (parser) Fix name locations of FunDef and External nodes ([#14267], thanks @HertzDevil)
• (parser) Fix end locations of Alias nodes ([#14271], thanks @HertzDevil)

...

1.11.2

Bugfixes

stdlib

• (files) Fix missing cause parameter from IO::Error#initialize (#14242, thanks @straight-shoota)
• (runtime) Always use %p for pointers in Crystal::System.print_error (#14186, thanks @HertzDevil)
• (runtime) Fixup for always use %p for pointers in Crystal::System.print_error (#14221, thanks @HertzDevil)

Infrastructure

• Changelog for 1.11.2 (#14249, thanks @straight-shoota)

1.11.1

Bugfixes

stdlib

• (crypto) Revert "Fix OpenSSL error handling for EOF (support for OpenSSL 3.2) (#14169)" (#14217, thanks @straight-shoota)

compiler

• (interpreter) Remove pkg-config name for libgc as workaround for interpreter loader (#14198, thanks @straight-shoota)
• (semantic) Revert "Add ReferenceStorage for manual allocation of references (#14106)" (#14207, thanks @straight-shoota)

Infrastructure

• Changelog for 1.11.1 (#14208, thanks @straight-shoota)
• Bump VERSION to 1.11.1-dev (#14197, thanks @straight-shoota)

1.11.0

Features

lang

• [breaking] Support alignof and instance_alignof (#14087, thanks @HertzDevil)
• (annotations) Support dll parameter in @[Link] (#14131, thanks @HertzDevil)
• (macros) Expose macro Call context via new @caller macro ivar (#14048, thanks @Blacksmoke16)

stdlib

• (collection) Add Enumerable#present? (#13866, thanks @straight-shoota)
• (collection) Add Enumerable#each_step and Iterable#each_step (#13610, thanks @baseballlover723)
• (collection) Add Enumerable(T)#to_set(& : T -> U) : Set(U) forall U (#12654, thanks @caspiano)
• (collection) Add Enumerable(T)#to_a(& : T -> U) forall U (#12653, thanks @caspiano)
• (files) Add IO::Error#target (#13865, thanks @straight-shoota)
• (llvm) Add LLVM::OperandBundleDef#dispose (#14095, thanks @HertzDevil)
• (llvm) Windows: Use local configuration for LLVM when linking dynamically (#14101, thanks @HertzDevil)
• (macros) Add CharLiteral#ord (#13910, thanks @refi64)
• (macros) Add macro methods for MacroIf and MacroFor nodes (#13902, thanks @sbsoftware)
• (macros) Expose doc comments on ASTNode when generating docs (#14050, thanks @Blacksmoke16)
• (macros) Add macro methods for ModuleDef (#14063, thanks @HertzDevil)
• (macros) Add macro methods for Include and Extend (#14064, thanks @HertzDevil)
• (macros) Add macro methods for ClassDef, EnumDef, AnnotationDef (#14072, thanks @HertzDevil)
• (numeric) Implement BigRational's rounding modes (#13871, thanks @HertzDevil)
• (numeric) Support full exponent range in BigFloat#**(BigInt) (#13881, thanks @HertzDevil)
• (numeric) Add Math.fma (#13934, thanks @HertzDevil)
• (numeric) Add Number#integer? (#13936, thanks @HertzDevil)
• (numeric) Publish Int::Primitive#abs_unsigned and #neg_signed (#13938, thanks @HertzDevil)
• (numeric) Add Int::Primitive#to_signed, #to_signed!, #to_unsigned, #to_unsigned! (#13960, thanks @HertzDevil)
• (numeric) Support BigFloat#** for all Int::Primitive arguments (#13971, thanks @HertzDevil)
• (numeric) Add Float32::MIN_SUBNORMAL and Float64::MIN_SUBNORMAL (#13961, thanks @HertzDevil)
• (numeric) Add Float::Primitive.parse_hexfloat, .parse_hexfloat?, #to_hexfloat (#14027, thanks @HertzDevil)
• (numeric) Implement sprintf "%f" in Crystal using Ryu Printf (#14067, thanks @HertzDevil)
• (numeric) Implement sprintf "%e" in Crystal (#14084, thanks @HertzDevil)
• (numeric) Implement sprintf "%a" in Crystal (#14102, thanks @HertzDevil)
• (numeric) Implement sprintf "%g" in Crystal (#14123, thanks @HertzDevil)
• (runtime) Add Crystal::HOST_TRIPLE and TARGET_TRIPLE (#13823, thanks @HertzDevil)
• (runtime) [experimental] Add Reference.pre_initialize and .unsafe_construct (#14108, thanks @HertzDevil)
• (runtime) [experimental] Add ReferenceStorage for manual allocation of references (#14106, thanks @HertzDevil)
• (serialization) Fix StaticArray#to_json (#14104, thanks @Vendicated)
• (specs) Add crystal spec --dry-run (#13804, thanks @nobodywasishere)
• (specs) Add crystal spec --list-tags (#13616, thanks @baseballlover723)
• (system) Respect Windows Path directory separators in File.match? (#13912, thanks @HertzDevil)
• (text) Support Unicode 15.1.0 (#13812, thanks @HertzDevil)
• (text) Add UUID.v1, .v2, .v3, .v4, .v5 (#13693, thanks @threez)
• (text) Add String and Char patterns to StringScanner (#13806, thanks @funny-falcon)
• (text) Add EOLconstant (End-Of-Line) (#11303, thanks @postmodern)
• (text) Add Char::Reader#current_char?, #next_char?, #previous_char? (#14012, thanks @HertzDevil)
• (text) Add String#matches_full? (#13968, thanks @straight-shoota)
• (text) Change Regex::MatchData#to_s to return matched substring (#14115, thanks @Vendicated)

compiler

• (codegen) Add incremental optimization levels (#13464, thanks @kostya)
• (debugger) Support debug information for 64-bit or unsigned enums (#14081, thanks @HertzDevil)
• (interpreter) Support instance_sizeof(T) in the interpreter (#14031, thanks @HertzDevil)
• (interpreter) Support -dynamic.lib in Windows interpreter (#14143, thanks @HertzDevil)
• (interpreter) Support absolute paths in CRYSTAL_INTERPRETER_LOADER_INFO (#14147, thanks @HertzDevil)
• (interpreter) Add Crystal::Repl#parse_and_interpret (#14138, thanks @bcardiff)
• (semantic) Change short_reference for top-level methods to ::foo (#14071, thanks @keshavbiswa)

tools

• (docs-generator) Expose inherited macros in generated API docs (#13810, thanks @Blacksmoke16)
• (docs-generator) Order macros below class methods in generated docs (#14024, thanks @Blacksmoke16)
• (formatter) Do not remove trailing comma from multi-line macro/def parameters (not yet enabled) (#14075, thanks @Blacksmoke16)
• (unreachable) Add --check flag to crystal tool unreachable (#13930, thanks @straight-shoota)
• (unreachable) Add annotations to output of crystal tool unreachable (#13927, thanks @straight-shoota)
• (unreachable) Print relative paths in crystal tool unreachable (#13929, thanks @straight-shoota)
• (unreachable) Add CSV output format to crystal tool unreachable (#13926, thanks @straight-shoota)
• (unreachable) Add --tallies option to crystal tool unreachable (#13969, thanks @straight-shoota)

Bugfixes

stdlib

• Fix Box(T?) crashing on nil (#13893, thanks @HertzDevil)
• Fix typos in src (#14053, thanks @kojix2)
• (collection) Fix Indexable#each_repeated_combination(n) when n > size (#14092, thanks @HertzDevil)
• (concurrency) Make Process#wait asynchronous on Windows (#13908, thanks @HertzDevil)
• (concurrency) Fix math overflow after spawning Int32::MAX + 1 fibers (#14096, thanks @ysbaddaden)
• (concurrency) Fix can't resume a running fiber (#14128, thanks @ysbaddaden)
• (crypto) Fix OpenSSL error handling for EOF (support for OpenSSL 3.2) (#14169, thanks @straight-shoota)
• (files) Fix Globber.constant_entry? matching patterns (#13955, thanks @GeopJr)
• (files) Fix String::Buffer and IO::Memory capacity to grow beyond 1GB (#13989, thanks @straight-shoota)
• (llvm) Fix a typo ([#13914](https://github.com/crystal-...

1.10.1

Bugfixes

stdlib

• IO#gets should have same result regardless of #peek availability (#13882, thanks @compumike)
• Support Android API levels 24 - 27 (#13884, thanks @HertzDevil)

Infrastructure

• (ci) Fix win.yml (#13876, thanks @straight-shoota)

1.10.0

Features

lang

• Add unlimited block unpacking (#11597, thanks @asterite)

stdlib

• Add more Colorize::Mode flags (#13745, thanks @HertzDevil)
• (collection) Add Hash#put_if_absent (#13590, thanks @HertzDevil)
• (collection) Add Set#rehash (#13630, thanks @HertzDevil)
• (collection) Add yield key in Hash#transform_values and value in #transform_keys (#13608, thanks @baseballlover723)
• (crypto) Upgrade SSL defaults to Mozilla guidelines version 5.7 (#13685, thanks @straight-shoota)
• (crypto) [security] Allow OpenSSL clients to choose cipher (#13695, thanks @carlhoerberg)
• (files) Add File#rename (#13640, thanks @carlhoerberg)
• (llvm) Support LLVM 17 (#13782, thanks @HertzDevil)
• (networking) Add overloads for URI::Params.encode with IO parameter (#13798, thanks @jwoertink)
• (numeric) Add Complex#to_i128, Complex#to_u128 (#13838, thanks @HertzDevil)
• (runtime) Add additional fields to GC:ProfStats (#13734, thanks @carlhoerberg)
• (serialization) Support YAML deserialization of 128-bit integers (#13834, thanks @HertzDevil)
• (serialization) Support 128-bit integers in JSON::PullParser#read? (#13837, thanks @HertzDevil)
• (specs) [breaking] Change spec runner to exit with failure for focus: true (#13653, thanks @straight-shoota)
• (text) Add String#byte_index(Char) (#13819, thanks @funny-falcon)
• (time) Support Android's system timezone database (#13666, thanks @HertzDevil)

compiler

• Experimental: Add Slice.literal for numeric slice constants (#13716, thanks @HertzDevil)

tools

• Add tool unreachable (#13783, thanks @straight-shoota)
• (dependencies) Add crystal tool dependencies (#13631, thanks @straight-shoota)
• (docs-generator) Add CSS for tables (#13822, thanks @nobodywasishere)
• (hierarchy) Support generic types in crystal tool hierarchy (#13715, thanks @HertzDevil)
• (playground) Update octicons to v19.5.0 (#13738, thanks @GeopJr)

Bugfixes

lang

• (macros) Fix missing normalization of macro expressions (and others) (#13709, thanks @asterite)
• (macros) Fix block parameter unpacking inside macros (#13813, thanks @HertzDevil)

stdlib

• (collection) [breaking] Mark the return type of methods such as Slice#copy_to as Nil (#13774, thanks @erdian718)
• (files) Change IO::Buffered#peek's return type to Bytes (#13863, thanks @HertzDevil)
• (llvm) Chop git suffix from LibLLVM::VERSION (#13699, thanks @HOMODELUNA)
• (macros) Do not add trailing + in TypeNode#id for virtual types (#13708, thanks @HertzDevil)
• (numeric) Fix BigDecimal#round for large digit counts in base 10 (#13811, thanks @HertzDevil)
• (serialization) Set encoding in XML.parse_html explicitly to UTF-8 (#13705, thanks @straight-shoota)
• (serialization) Fix error message when parsing unknown JSON enum value (#13728, thanks @willhbr)
• (serialization) Fix YAML scalar type validation error message (#13771, thanks @MistressRemilia)
• (serialization) Fix incorrect overflow in UInt64.from_yaml (#13829, thanks @HertzDevil)
• (system) Fix Process.new with nilable chdir parameter on Windows (#13768, thanks @straight-shoota)
• (system) Fix typo in unistd.cr (#13850, thanks @kojix2)
• (text) Fix Char::Reader#each bounds check after block (#13817, thanks @straight-shoota)
• (text) Minor fixup for HTML.decode_codepoint (#13843, thanks @straight-shoota)

compiler

• [breaking] Remove double .cr.cr extension in require path lookup (#13749, thanks @straight-shoota)
• (parser) Fix end location for FunDef (#13789, thanks @straight-shoota)
• (semantic) Fix lookup scope for @[Primitive] def's return type (#13658, thanks @HertzDevil)
• (semantic) Fix typo in call_error.cr (#13764, thanks @kojix2)

tools

• (docs-generator) Fix octicon-link icon color on dark mode (#13670, thanks @GeopJr)
• (docs-generator) Allow word breaks between module names in docs (#13827, thanks @nobodywasishere)
• (docs-generator) Fix docs dark mode dropdown background on blink (#13840, thanks @GeopJr)
• (init) Fix shard crystal version in crystal init (#13730, thanks @xendk)
• (hierarchy): Fix byte sizes for Procs inside extern structs (#13711, thanks @HertzDevil)

Performance

stdlib

• Optimize IO::Delimited (#11242, thanks @asterite)
• (crypto) Use IO::DEFAULT_BUFFER_SIZE in Digest#update (#13635, thanks @carlhoerberg)
• (crypto) Fix memory leak in OpenSSL::SSL::Socket#peer_certificate (#13785, thanks @compumike)
• (files) Optimize IO#read_string(0) (#13732, thanks @jgaskins)
• (files) Avoid double file buffering (#13780, thanks @carlhoerberg)
• (llvm) Refactor LLVM.default_target_triple to avoid regex (#13659, thanks @straight-shoota)
• (numeric) Pre-allocate Dragonbox cache array (#13649, thanks @HertzDevil)
• (runtime) Avoid realloc callstack array when unwinding (#13781, thanks @carlhoerberg)
• (time) Optimize the constructors of Time::Span (#13807, thanks @erdian718)

Refactor

stdlib

• Do not use nilable Pointers (#13710, thanks @HertzDevil)
• (collection) Use Set(T) instead of Hash(T, Bool) (#13611, thanks @HertzDevil)
• (concurrency) Use Fiber.inactive inside Fiber#run's ensure block (#13701, thanks @HertzDevil)
• (crypto) Use JSON::Serializable in scripts/generate_ssl_server_defaults.cr (#13667, thanks @HertzDevil)
• (crypto) Refactor narrow OpenSSL requires for digest implementations (#13818, thanks @straight-shoota)
• (networking) [deprecation] Add types to HTTP::StaticFileHandler (#13778, thanks @jkthorne)

compiler

• Restrict some boolean properties to Bool in the compiler (#13614, thanks @HertzDevil)

Documentation

stdlib

• (crypto) Fix docs for Digest::SHA512 (#13796, thanks @jgaskins)
• (files) Document Dir#mkdir, Dir#exists? (#13795, thanks @jkthorne)
• (networking) Add documentation for HTTP::Headers#add (#13762, thanks @jkthorne)
• (text) Fix typo in regex.cr (#13751, thanks @beta-ziliani)

Specs

stdlib

• (numeric) Update specs for Int::Primitive.from_json (#13835, thanks @HertzDevil)
  -...

1.9.2

Bugfixes

stdlib

• (runtime) Revert "Add default interrupt handlers" (#13673, thanks @straight-shoota)

1.9.1

Bugfixes

stdlib

• (serialization) Fix Serializable with converter parsing null value (#13656, thanks @straight-shoota)

compiler

• (codegen) Fix generated cc command for cross compile (#13661, thanks @fnordfish)

1.9.0

Breaking

stdlib

• (numeric) Handle NaNs when comparing Big* numbers against Float (#13293, #13294, #13350, #13554, thanks @HertzDevil)
• (llvm) Remove most LLVM::DIBuilder functions from llvm_ext.cc (#13448, thanks @HertzDevil)

Features

lang

• (macros) Add warning macro (#13262, thanks @Blacksmoke16)
• (macros) Add print macro (#13336, thanks @jkthorne)

stdlib

• (collection) Add Enumerable#in_slices_of (#13108, thanks @pricelessrabbit)
• (collection) Add support for dash separator to Enum.parse (#13508, thanks @straight-shoota)
• (collection) Add Enum#to_i128 and #to_u128 (#13576, thanks @meatball133)
• (collection) Add Enumerable#partition overload with type filter (#13572, thanks @baseballlover723)
• (concurrency) Support asynchronous IO.pipe on Windows (#13362, thanks @HertzDevil)
• (files) [deprecation] Add File::MatchOptions to control Dir.glob's behavior (#13550, thanks @HertzDevil)
• (networking) Implement Socket#reuse_port on Windows (#13326, thanks @stakach)
• (networking) Add multicast support to UDPSocket on Windows (#13325, thanks @stakach)
• (networking) HTTP Server should allow custom concurrency models (#13428, thanks @stakach)
• (networking) Add Socket::IPaddress.v4, .v6, .v4_mapped_v6 (#13422, thanks @HertzDevil)
• (networking) Add URI::Params#merge, #merge! and URI#update_query_params (#13415, thanks @skinnyjames)
• (networking) Support Unix sockets on Windows (#13493, thanks @HertzDevil)
• (networking) Add HTTP::Request#form_params (#13418, thanks @threez)
• (numeric) Add BigDecimal#% (#13255, thanks @MattAlp)
• (numeric) Improve conversions from BigInt to Int::Primitive (#13562, thanks @HertzDevil)
• (runtime) Print error if unable to delay-load DLL on Windows (#13475, thanks @HertzDevil)
• (runtime) Add default interrupt handlers (#13568, thanks @straight-shoota)
• (serialization) Add ignore_serialize for YAML::Serializable (#13556, thanks @meatball133)
• (specs) Add a testcase line number to the output of JUnitFormatter (#13468, thanks @nobodywasishere)
• (specs) Publish the assert_prints spec helper (#13599, thanks @HertzDevil)
• (system) Implement Process.exec on Windows (#13374, thanks @HertzDevil)
• (system) Add File::BadExecutableError (#13491, thanks @HertzDevil)
• (text) Add inspection of Regex options support (#13354, thanks @straight-shoota)
• (text) Add Regex.literal (#13339, thanks @straight-shoota)
• (text) Implement #match! for Regex (#13285, thanks @devnote-dev)
• (text) Add parameters for Regex::MatchOptions to matching methods (#13353, thanks @straight-shoota)
• (text) Add Char#titlecase for correct mixed-case transformations (#13539, thanks @HertzDevil)
• (time) Add start_day parameter to Time#at_beginning_of_week (#13446, thanks @DanielGilchrist)
• (time) Map IANA time zone identifiers to Windows time zones (#13517, thanks @HertzDevil)
• (time) Add Time.unix_ns and #to_unix_ns (#13359, thanks @garymardell)

compiler

• Add message about non-release mode to crystal --version (#13254, thanks @will)
• Respect %CC% on Windows (#13376, thanks @HertzDevil)
• Support DLL delay-loading on Windows (#13436, thanks @HertzDevil)
• Support -static and -dynamic .lib suffixes on Windows (#13473, #13645, thanks @HertzDevil)
• Make compiler aware of output extension when building programs (#13370, thanks @HertzDevil)
• Support CRYSTAL_LIBRARY_RPATH for adding dynamic library lookup paths (#13499, thanks @HertzDevil)
• Add compiler command crystal clear_cache (#13553, thanks @baseballlover723)
• (codegen) Support LLVM 16 (#13181, thanks @HertzDevil)
• (semantic) Correctly ignore nested deprecation warnings (#13513, thanks @straight-shoota)

tools

• (docs-generator) Add dark mode to docs (#13512, thanks @GeopJr)
• (docs-generator) Add mobile support to docs (#13515, thanks @GeopJr)
• (formatter) [security] Formatter: escape bi-directional control characters within strings (#13067, thanks @HertzDevil)

Bugfixes

stdlib

• (collection) Fix Array#flatten to discard Iterator::Stop (#13388, thanks @straight-shoota)
• (collection) Fix return type of Iterator#chunk and Enumerable#chunks without Drop (#13506, thanks @straight-shoota)
• (collection) Fix Iterator#with_index(offset) with non-Int32 offset (#13612, thanks @HertzDevil)
• (concurrency) Fix preview_mt infinite loop on Windows (#13419, thanks @HertzDevil)
• (concurrency) Fix Atomic#max and #min for signed enums (#13524, thanks @HertzDevil)
• (concurrency) Fix timeout events getting lost on Windows (#13525, thanks @HertzDevil)
• (concurrency) Support Atomic(T)#compare_and_set when T is a reference union (#13565, thanks @HertzDevil)
• (files) Fix Dir#info on Windows (#13395, thanks @HertzDevil)
• (files) Windows: open standard streams in binary mode (#13397, thanks @HertzDevil)
• (files) Fix File.info(File::NULL) on Windows (#13421, thanks @HertzDevil)
• (files) Allow File.delete to remove read-only files on Windows (#13462, thanks @HertzDevil)
• (files) Make fcntl defined on all platforms (#13495, thanks @HertzDevil)
• (files) Allow Dir.delete to remove read-only directories on Windows (#13626, thanks @HertzDevil)
• (files) Use current directory's root for Dir.glob("/...") on Windows (#13628, thanks @HertzDevil)
• (llvm) Fix LLVM.default_target_triple to normalize aarch64 darwin target (#13597, thanks @straight-shoota)
• (log) Fix Log::Builder append BroadcastBackend to itself (#13405, thanks @straight-shoota)
• (macros) Fix error message for calling record macro with kwargs (#13367, thanks @a-alhusaini)
• (networking) Remove double URL escape in HTTP::Server::Response.redirect (#13321, thanks @threez)
• (networking) Fix WebSocket capitalization in docs (#13331, thanks @joshrickard)
• (networking) Fix TCPSocket#tcp_keepalive_idle on Windows (#13364, thanks @HertzDevil)
• (networking) Fix client-side TCPSocket#remote_address on ...