YouTube Filter per c4r

==Basic introduction==

- You could get the latest news about your concerned videos by adding keyword entries in the settings page.

e.g. I want to know the latest updated "Rick And Morty" on in "Adult Swim" channel, but I don't want to know other animes. Add "Rick And Morty;Adult Swim" in this extension, you could do that!

- By adding playlist, you could know the update in time.

e.g. I want to know the latest update of "Music Videos" playlist created by "Mike Tompkins". Add "Music Videos;Mike Tompkins" in this extension, and check playlist.

==basic rules==

1. one keyword entry includes any number of keywords and one channel name.
2. at least one keyword required. multiple keywords should be separated with comma(,)
3. channel name is following the last keyword. Separate keywords and channel name with colon(;)

e.g. I want to know the videos about "Rick and Morty"
keyword entry : "Rick And Morty;Adult Swim"

This will show all the videos, whose titles includes "Rick And Morty" in "Adult Swim" channel.