Reverse expect for console output to be correct
Add support for returning in delete query

* Adds compilation of returning in delete
* Simplify response handling
* Adds support for passing in returning columns to delete method (keeps behaviour inline with select and update)
* Adds test output checking for delete queries
Merge pull request #243 from blakeembrey/delete-returning

Delete returning
fix docs on mysql charset
documented `update` syntax reflects 0.5.x (closes #262)

[ci skip]
bump dev-dependency to mysql 2.2, strip utf8 as charset until they figure that out
remove charset from example until they figure out charsets/collations
docs prep for release
release 0.5.14