Added a couple of methods to the lib
Added to_i64 in string
Bootstrap compiler works again
Mark immutable classes
Set mutable hierarchy types
Fixed some bootstrap specs
Started updating bootstrap's lexer to latest version
Added String#delete(char : Char)
Fixed icr
Fixed another SSA bug
Allow underscores in bootstrap's lexer when lexing numbers
Merge branch 'master' of github.com:romeroadrian/crystal (pull request #21).
Continued bootstrap lexer: lex integer suffixes
Lex float suffixes in boostrap
Allow %(strings)
Added String#replace(char : Char, replacement : String) and escape quotes in String#insepct
Use the new string literals in bootstrap
Fire subclass event after putting generic instance in the cache
Fixed out @instance_var
Fixed bootstrap's codegen specs