Update default canto RSS URL

Signed-off-by: Jack Miller <jack@codezen.org>
Add retry to DB re-open

Occasionally, after a trim, the DB will throw a busy signal a couple of
times. Considering we need the DB to be open to do practically
*anything*, try a few more times to get it. 3 tries has worked 100% of
the time, 2 seems to fail every once in awhile.

Signed-off-by: Jack Miller <jack@codezen.org>
Allow multiple character delimiters to escsplit

Signed-off-by: Jack Miller <jack@codezen.org>