Issue 67

I've refrained from using `imp` and instead rely on good old fashioned sys.path to do the work for us. It's a little brute, but there are no more surprises. The merging mentioned in #67 is simply over my head and I can't make either heads or tails of it.

Funnily enough, as a result of hindering duplicated modules, one of the Maya plugins stopped working as it was also duplicated. The `Deduplicating plugins` commit handles that little caveat. :)