fix debug message
fix tokenizer bug
fix process test
add process type definition
Merge remote-tracking branch 'upstream/master' into ShellSyntax
impl 'new' operator parser
Merge pull request #24 from tetsurom/ShellSyntax

fix tokenizer
fix typo; StrngLiteral -> StringLiteral
add peg type checker
impl new syntax stab
Merge remote-tracking branch 'upstream/master' into ShellSyntax
impl TypeVarDecl (not works well yet)
impl LetNode
enable systemcall trace
Merge pull request #26 from tetsurom/ShellSyntax

Impl TypeLet
add class syntax
enable new expression (only default constractor)
Merge pull request #27 from sekiguchi-nagisa/proc-error-log

enable systemcall trace
fix conflict
Merge pull request #28 from tetsurom/ShellSyntax

Impl new expression