ENH: Numba support for installed without binary installs

Enables optimal support for Numba in the recursions
Merge pull request #10 from bashtage/enable-numba

ENH: Numba support for installed without binary installs
TST: Test deprecation code

Add tests for routines the show deprecation message
Merge pull request #11 from bashtage/test-deprecations

TST: Test deprecation code