1.4.0

Language

• Add support for Int128 in codegen and macros (#11576, thanks @BlobCodes)
• Support ProcPointers with global path and top-level method references (#11777, thanks @HertzDevil)
• Fix documentation for macros system and run (#11740, thanks @lbguilherme)
• Experimental: better type inference for ivars/cvars (#11812, thanks @asterite)
• Support @[Deprecated] on constants (#11680, thanks @HertzDevil)

Standard Library

• Fix compiler flags with optional arg eating following flags (#11201, thanks @yb66)
• Support GNU style optional arguments in OptionParser (#11546, thanks @HertzDevil)
• Remove some unnecessary link annotations (#11563, thanks @straight-shoota)
• Remove useless assignments (#11774, thanks @IgorPolyakov)
• Use "truthy" and "falsey" in more places in the documentation (#11784, thanks @HertzDevil)
• Add missing code blocks for self in documentation (#11718, thanks @HertzDevil)
• Add support for LLVM 14.0 (#11905, thanks @HertzDevil)
• Fix code examples in doc comments (2022-03) (#11927, thanks @maiha)

Collection

• Remove Iterator.of(Iterator.stop) from implementations (#11613, thanks @asterite)
• Add allow Enumerable arguments for Hash#select and #reject (#11750, thanks @mamantoha)
• Add docs for Hash#reject! (#11691, thanks @wontruefree)
• Add raising method variants Enumerable#find! and #index! (#11566, thanks @yxhuvud)
• (performance) Optimize block-less overloads of BitArray#fill (#11450, thanks @HertzDevil)
• Adds docs for Array#replace (#11682, thanks @wontruefree)
• (performance) Optimize BitArray's counting methods (#11591, thanks @HertzDevil)
• Add some return types to Array, Hash, Set and String (#11822, thanks @asterite)
• Add Hash#update (#11881, thanks @ftarulla)
• Allow Bytes[] to construct an empty Bytes (#11897, thanks @HertzDevil)
• Improve BitArray's constructors (#11898, thanks @HertzDevil)
• Add overload to Enumerable#tally and #tally_by accepting a hash (#11815, thanks @mamantoha)

Crypto

• Add support for Bcrypt algorithm version 2b (#11595, thanks @docelic)

Files

• Fix race condition in chown (#11885, thanks @didactic-drunk)
• Add docs for Dir#each_child (#11688, thanks @wontruefree)
• Add docs for Dir#path (#11689, thanks @wontruefree)
• Support read-write + binary file modes in File.open (#11817, thanks @HertzDevil)
• Add docs for Dir#entries (#11701, thanks @wontruefree)
• Add IO#getb_to_end (#11830, thanks @HertzDevil)
• Fix IO::FileDescriptor#pos giving incorrect position after write (#10865, thanks @didactic-drunk)
• Remove reference to binary file mode in File.open (#11824, thanks @HertzDevil)

Macros

• Add #parse_type (#11126, thanks @Blacksmoke16)

Networking

• (performance) Optimize URI.decode (#11741, thanks @asterite)
• Fix address_spec expectation for Windows Server 2022 (#11794, thanks @straight-shoota)
• Add space_to_plus option in URI::Params everywhere (#11821, thanks @asterite)
• Improve URI::Params#inspect to use hash-like literal (#11880, thanks @straight-shoota)
• Use enums instead of symbols for MIME::Multipart and HTTP::FormData (#11617, thanks @HertzDevil)

Numeric

• (breaking-change) Fix: Hide BigDecimal::ZERO and BigDecimal::TEN (#11820, thanks @lbguilherme)
• (breaking-change) Add support for scientific notation in BigFloat#to_s (#10632, thanks @HertzDevil)
• Fix: Inspect string in error message for number parsing (#11883, thanks @straight-shoota)
• Add docs for Complex#zero? (#11697, thanks @wontruefree)
• Fix E notation parsing in BigDecimal (#9577, thanks @stevegeek)
• (performance) Optimize Integer decoding from bytes (#11796, thanks @carlhoerberg)

Runtime

• Fix interpreter when shared library pthread is missing (#11807, thanks @straight-shoota)
• (performance) Implement Intrinsics.pause for aarch64 (#11742, thanks @lbguilherme, @jgaskins)
• Add crash handler on Windows (#11570, thanks @HertzDevil)
• Add specs for NamedTuple#from (#11816, thanks @straight-shoota)
• Improve error for incompatible generic arguments for WeakRef (#11911, thanks @straight-shoota)
• Add the wasm entrypoint defined in Crystal (#11936, thanks @lbguilherme)

Serialization

• Allow passing instance method or conditional expressions to option ignore_serialize on JSON::Field (#11804, thanks @cyangle)
• Implement Iterator.from_json and #to_json (#10437, thanks @wonderix)

Specs

• Add file and line arguments to it_iterates (#11628, thanks @straight-shoota)
• Remove duplicate word in documentation (#11797, thanks @samueleaton)

System

• (breaking-change) (security) Fix character mappings for Windows path conversions (#11847, thanks @straight-shoota)
• Add fallback for Path.home on Unix (#11544, thanks @HertzDevil)
• Relax ENV.fetch(key, &)'s block restriction (#11779, thanks @HertzDevil)
• Refactor target clauses for system implementations (#11813, thanks @straight-shoota)
• Fix Path support for UNC shares (#11827, thanks @straight-shoota)
• Fix regression for Linux older than 3.17: properly check that getrandom is available (#11953, thanks @lbguilherme)

Text

• Fix ensure PCRE JIT mode is available before running spec (#11533, thanks @Blacksmoke16)
• Add more Colorize overloads and fix docs (#11832, thanks @asterite)
• Refactor Colorize::Mode enum (#11663, thanks @straight-shoota)
• Add some docs for UUID (#11683, thanks @wontruefree)
• Add docs for UUID#urn (#11693, thanks @wontruefree)
• Add docs for String#[] (#11690, thanks @wontruefree)
• Allow explicit usage of libiconv (#11876, thanks @luislavena)
• (breaking-change) Fix: Honour encoding in IO::Memory#to_s (#11875, thanks @straight-shoota)
• Add self return type to UUID constructor methods (#10539, thanks @straight-shoota)
• Fix infinite loop for certain StringPool initial capacities (#11929, thanks @HertzDevil)

Time

• Add examples to Time::Format methods (#11713, thanks @ThunderKey)
• Support day of year (%j) in Time parsers (#11791, thanks @HertzDevil)

Compiler

• Hello WebAssembly! (MVP implementation) (#10870, thanks @lbguilherme)
• Fix compiler specs git integration for configurable default branch (#11754, thanks @yxhuvud)
• Crystal::ToSVisitor: Remove decorate_* methods (#11724, thanks @HertzDevil)
• Use fewer symbols in the compiler source (#11625, thanks @HertzDevil)
• Add support for --m* flags to crystal spec and crystal eval (#11767, thanks @yxhuvud)
• Add local compiler wrapper script for Windows (#11524, thanks @HertzDevil)
• Add Crystal::Program#check_deprecation (#11684, thanks @HertzDevil)
• Refactor symbols for primitive number kinds to enums (#11621, thanks @HertzDevil)
• Remove useless assignments II (#11843, thanks @IgorPolyakov)
• Limit the number of rendered overloads on signature mismatch (#10890, thanks @caspiano)
• Support "can't infer type parameter" error for uninstantiated generic modules (#11904, thanks @HertzDevil)
• Fix: Accept only option flags in CRYSTAL_OPTS for build commands (#11922, thanks @HertzDevil, @beta-ziliani)
• Evaluate LibLLVM::IS_LT_* during macro expansion time (#11913, thanks @HertzDevil)
• Fix incorrect var type inside nested exception handler (#11928, thanks @asterite)
• Fix: Look up return type in defining type (#11962, thanks @asterite)

Codegen

• (performance) Codegen: Do not always request value for Proc#call (#11675, thanks @HertzDevil)

Debugger

• Fix debug location of inlined Proc#call body (#11676, thanks @HertzDevil)

Generics

• Resolve non-type free variables in return type restrictions (#11861, thanks @HertzDevil)
• Fix recursive pointerof detection with generic splat type variables (#11811, thanks @HertzDevil)

Interpreter

• Fix for Crystal interpreter crash (#11717, thanks @wmoxam)
• Interpreter: support Tuple#[] with range literals (#11783, thanks @HertzDevil)
• Interpreter: Promote arguments of variadic function calls (#11795, thanks @straight-shoota)
• Check if libraries are present using dlopen (#11852, thanks @FnControlOption)
• Use Crystal::Loader in the interpreter (#11579, thanks @straight-shoota)
• Improve Crystal::Loader errors (#11860, thanks @straight-shoota)
• Enable interpreter integration specs for YAML (#11801, thanks @straight-shoota)

Parser

• Fix parser error with semicolon + newline in parenthesized Expressions (#11769, thanks @straight-shoota)
• Fix comment indentation in ASTNode#to_s (#11851, thanks @FnControlOption)
• Add locations for else, ensure, end keywords (#11476, thanks @FnControlOption)
• Add parser support to handle CRLF the same as LF (#11810, thanks @asterite)
• Lexer: use Crystal::Token::Kind enum instead of symbols (#11616, thanks @HertzDevil)
• Support Generic nodes with no type variables (#11906, thanks @HertzDevil)

Semantic

• (breaking-change) Drop skip_abstract_def_check flag support (#9217, thanks @makenowjust)
• Add error when instance variable is inherited from module and supertype (#11768, thanks @straight-shoota)
• Check file-private types for abstract defs and recursive structs (#11838, thanks @HertzDevil)
• Fix: Prevent eager instance_sizeof on structs (#11856, thanks @mattrberry)
• Fix: Do not consider global Path in def parameter restriction as free variable (#11862, thanks @HertzDevil)

Tools

• Do not inherit from Hash in the compiler (#11707, thanks @HertzDevil)
• Use OptionParser in crystal env (#11720, thanks @HertzDevil)

Playground

• Replace PNG icon with optimized SVG for playground (#7616, thanks @straight-shoota)

Other

• Update previous Crystal release - 1.3.2 (#11715, thanks @straight-shoota)
• Add scripts/release-update.sh (#11716, thanks @straight-shoota)
• [Makefile] Honour $CC in EXPORT_CC (#11548, thanks @straight-shoota)
• Fix typo in GHA aarch64 config (#11793, thanks @straight-shoota)
• [CI] Test against LLVM 13 (#11343, thanks @straight-shoota)
• [CI] Use parameters in circleci config (#11714, thanks @straight-shoota)
• Refactor etc/completion.bash (#11719, thanks @HertzDevil)
• [CI] Renaming jobs to be arch-os-job or arch-build-job (#11207, thanks @beta-ziliani)
• Improve documentation for review and merge processes (#11800, thanks @straight-shoota)
• Improve section ordering in scripts/github-changelog.cr (#11770, thanks @straight-shoota)
• Upload build artifacts to S3 bucket (#11902, thanks @matiasgarciaisaia, @straight-shoota)
• Fix make install for BSD (#11758, thanks @straight-shoota)
• Fix typo (#11939, thanks @taupiqueur)
• [CI] Update to shards 0.17.0 (#11930, thanks @straight-shoota)
• Use be_empty expectations in more specs (#11937, thanks @HertzDevil)
• [CI] Update distribution-scripts (#11969, thanks @straight-shoota)