Remove operator idea comment
Factor out setquery_eval reducer into function argument
Factor out set wrappers into a cast argument
Implement setquery as a special case of query
Evaluate expressions iteratively, not recursive

A scary change!
Test to check operators within brackets
Rename project 'evil' and move tests
Mathematics arithmetic evaluator
Update README and setup with evil
Maths tests
Refactor some tests into separate files
Merge pull request #1 from icio/feature/generalisation

Evil Generalisation