Revise tests

- Expand test coverage in general (there's a lot more to be done here, but making some headway)
- Check for step error in `executeUpdate` (as result of issue fixed in v2.6.2

Merge pull request ccgus#454 from robertmryan/master

Framework and Carthage Support

Release 2.5.2

version bump.

Merge pull request ccgus#300 from stephanheilner/podspec_update

Created separate FTS subspec which includes custom FM tokenizers

Merge pull request ccgus#260 from robertmryan/master

Fix minor typos

Merge pull request ccgus#220 from robertmryan/master

Change the use of #if / #endif

version 2.1

version 2.0

version 1.5.1