0.2.0

• Fixed sub-expression types corrupting the parent expression type
• Renamed oneof to alternation
• Added parse statistics
• Ignored literals are now removed before parsing
• Added C BNF for testing
• Added anti-loop caching
• Improvd error handling
• Added infinite loop and infinite depth detection
• Added support for multiple root node kinds
• Clarified bnf.bnf rule names
• Improved parser logging
• BNF grammar now ignores new lines
• Fixed BNF strings and comments
• Fixed parser crashing when ending on an ignored token