Big infrastructure features todo list

[lahmatiy]

• [x] AST
• [ ] Immutable paths hoisting (reduce computations -> performance)
• [ ] Smart computation caching across queries
• [ ] Query parts performance stat
• [ ] Query transforming, e.g. query merge, subquery to a query, context inlining
• [ ] Syntax highlighting
• [ ] Prettifier
• [x] Move jison to dev dependencies
• [ ] Debugging (step by step evaluation)
• [ ] Input data shape prediction suitable for a query (based on touching paths)