Query:
- Create Query.Evaluation_Context Object to evaluate expressions
- Rename operator "regexp" into "RegExp" the same as the underlying JavaScript class out of compatibility with future classes implementations
- Remove operator aliases for || (or), && (and), and ! (not) and associated tests
- Add 25 tests mostly for regular expressions, consequently:
  - Fix start value for sub-expressions, using default value
  - Fix operator match
- Update documentation