Forgot to apply the limit.
If any .sublimelinterrc file is saved, clear the rc cache and relint.
Cache the search for rc files, it is expensive on remote filesystems.
Renamed method to be more precise what it is clearing.
Added Clear Caches command.
Cleaned up token replacer.

- Lists may contain dicts or lists.
- Use isinstance() instead of type(), it's safer and more pythonic.
- Moved supported token docs to the doctoring.
Code cleanup.