List of 1.2.1 deprecations

Made a compilation of 1.2.1 deprecations based on the changelogs. It’s
probably not correct, and it’s not very in depth.

http://leethal.stikipad.com/rails/show/1.2.1+Deprecations

It’s a wiki, though, and that’s partly why I announce it. Would be nice
if people could update it with whatever they seem fit for such a
compilation.