Support map.$key, ary.$idx.
Fixed silly variable name.
Implemented `[% a[i] %]`
Simplified compiler.
doc
TokenPair is not a TT syntax specific feature.
Remove unused file.
Implemented the 'loop' variable.
Added message listener interface.
Implemented warnings litstener.
Token knows the position.
Fixed spelling issue.
Support __FILE__ token.
Implemented __LINE__ token.
Remove TTLexerBuilder.