added date_format and datetime_format to collection for correctly parsing and formatting datetime objects for every specific database adapter, fixes #295
replaced custom test names with the one used in AdapterTest
Merge pull request #302 from fetch/gh-issue-295

Added date_format and datetime_format to Collection
To help debug #298, please also log the values you're binding as well as the prepared query...
Re #298, what if we just remove this failing test for now?
Re #298, punting. :[
Merge pull request #298 from kla/debugging-gh298

Punting! Just tell Travis to skip this test and see #307 for (someday) resolution.
Fix typo
Fix test

Without a return here, this array_filter() callback is rather useless.
Merge pull request #309 from rlerdorf/master

Fix OCI test
Merge pull request #308 from rlerdorf/patch-1

Fix typo that was attempting subtraction instead of an instance's method call