Merge branch 'release/v0.1.12' into develop
Add from/size tests
Add variety of "Raw" operations

 - Add RawRequest for nearly 100% raw requests
 - Convert RawQuery back into a raw "query: {}" operatoin
 - Add RawFilter, RawFacet

Closes #37
Update Changelog
Merge branch 'feature/raw' into develop
Merge branch 'develop'