Add additional filters

Hi,

Could you add a couple more filters to the plugin? Here are the specific ones I’d love to have at the moment:

• https://gist.github.com/macbookandrew/128aa99b086d74a1db041b8950eb83a1/revisions#diff-18f1de2389df4f7046e1bbae02986c9b
• Diff file for the above: https://gist.github.com/macbookandrew/128aa99b086d74a1db041b8950eb83a1#file-patch-file-diff

Eventually, it would be great if you could add filters to most of the functions.

Thanks!