- Rewrite whole engine using a stream parser
- Support multi-line for statements, expressions and tag comments (1)
- Support wrapper (instead of a single prefix) for statement comments
- Add `from` and `import` shortcuts to import python modules
- Support expressions in `if/unless/while` statements
- Support `liquid` `forloop` object for `for` statement (2)
- Improve debug information
- Add arguemtn position specification for filters
- Add tenary filters
- Remove `&` modifiers