version 1.8 - some major changes

Major algorithm changes:
- episodes are selected by priority instead of "lowest quality",
  since in some cases that might be too low
- redownload an episode if a repack is available
- make sure the series quality override is respected; it was previously
  ignored

schema update:
- added `container' slots to episode and quality
- added `priority' to quality
- added `repack' to episode

dramatically increased the number of valid sources and codecs,
added :1080i to valid resolutions, added list of value containers.

defquality: added priority and container keywords

Improved *usage*.

New command line argument: --debug-feed

Merge --db with --root's value (default or not).

Added `force' option to --auto-backup.

Added db-upgrade method, which doesn't do anything.

quality definitions can now take lists for everything except
`name' and `priority', which means the db lookup function needed
to change, because cursors can't be used anymore.

RSS parsers need to pull out container and repack info.

BTN RSS parser improved quite a lot.

Remove eztv.it RSS parser.

****

move config.cl to private repo, include here sanitized version

config changes:
- add :priority to defquality
- change :<720p to :sd

improve test.sh