Bump version to 0.1.0.dev.
Allow an easier argument signature when building spatial functions calls.

Now Foo.spatial_function(:distance, '0,0') is equivalent to
Foo.spatial_function(:distance, :geom_arg => '0,0').
Add spatial function tests.
Clean up our version information output.
Handle the `name` type found in the geography_columns view.
Register spatial type OIDs.
No longer necessary.
SQLCounter has been moved into ActiveRecord::TestCase.
Clean up tests so they run in both Rails 3.2+ and 4.
Fix spatial associations for Rails 4.
ActiveRecord::Base#all is deprecated in this situation; use #to_a instead.