0.5.3

• Spec: when a should or should_not fail, the filename and line number, including the source's line, is included in the error message.
• Spec: added -l switch to be able to run a spec defined in a line.
• Added crystal spec file:line
• Properties (property, setter, getter) can now be restricted to a type with the syntax property name :: Type.
• Enums can be used outside lib. They inherit Enum, can have methods and can be marked with @[Flags].
• Removed the distinction between lib enums and regular enums.
• Fixed: it was incorrectly possible to define class, def, etc. inside a call block.
• The syntax for specifying the base type of an enum, enum Name < BaseType has been deprecated. Use enum Name : BaseType.
• Added Array#<=> and make it comparable to other arrays.

0.5.2

• New command line interface to the compiler (crystal build ..., crystal run ..., crystal spec, etc.). The default is to compiler and run a program.
• crystal eval without arguments reads from standard input.
• Added preliminar crystal deps command.
• __FILE__, __DIR__ and __LINE__, when used as def default arguments, resolve to the caller location (similar to D and Swift)
• Allow as to determine a type even if the casted value doesn't have a type yet.
• Added is_a? in macros. The check is against an AST node name. For example node.is_a?(HashLiteral).
• Added emit_null property to json_mapping.
• Added converter property to json_mapping.
• Added pp in macros.
• Added to_pretty_json.
• Added really basic CSV.parse.
• Added Regex.escape.
• Added String#scan.
• Added -e switch to spec, to run specs that match a pattern.
• Added --fail-fast swtich to spec.
• Added HTTPClient#basic_auth.
• Added DeclareVar, Def and Arg macro methods.
• Added Time and TimeSpan structs. TimeWithZone will come later.
• Added Array#fill (thanks @exilor).
• Added Array#uniq.
• Optimized File.read_lines.
• Allow any expression inside {% ... %} so that you can intepret code without outputting the result.
• Allow \ at the end of a line.
• Allow using if and unless inside macro expressions.
• Allow marking a fun/def as @[Raises] (useful when a function can potentially raise from a callback).
• Allow procs are now considered @[Raises].
• OAuth2::Client supports getting an access token via authorization code or refresh token.
• Consecutive string literals are automatically concatenated by the parser as long as there is a \ with a newline between them.
• Many bug fixes.

0.5.1

• Added json_mapping macro.
• Added Signal module.
• Added Tempfile class.
• Enhanced HTTP::Client.
• Added OAuth::Consumer.
• Added OAuth2::Client.
• Added OpenSSL::HMAC.
• Added SecureRandom.
• New syntax for array/hash-like classes. For example: Set {1, 2, 3} and HTTP::Headers {"content-type": "text/plain"}. These just create the type and use << or []=.
• Optimized Json parsing performance.
• Added a CSV builder.
• XML reader can parse from an IO.
• Added Dir::glob and Dir::Entries (thanks @jhass)
• Allow ensure as an expression suffix.
• Fixed #219: Proc type is not inferred when passing to library fun and the return type doesn't match.
• Fixed #224: Class#new doesn't pass a block.
• Fixed #225: ICE when comparing void to something.
• Fixed #227: Nested captured block looses scope and crashes compiler.
• Fixed #228: Macro expansion doesn't retain symbol escaping as needed.
• Fixed #229: Can't change block context if defined within module context.
• Fixed #230: Type interference breaks equality operator.
• Fixed #233: Incorrect no block given message with new.
• Other bug fixes.