Enables setting a foreign key as a unique_base for Sluggable behaviour
Fixed issue with assumption that foreign keys always points to an integer field called by getID()
Added a testcase for one-to-many relationship with two string-based join columns
Fix minor typo
Fixing typo in uploadable doc
Merge pull request #854 from Lctrs/master

Fixing typo in uploadable doc
Merge pull request #852 from PowerKiKi/patch-1

Fix minor typo in doc
Merge pull request #845 from andersaloof/master

Enables setting a foreign key as a unique_base for Sluggable behaviour