v1.8

Some major changes to output writing, and merging of script. Probably bugs too.

New features

• Concatenate multiple categories into single file
• Sort output
• Appending to output files

Old features

• Import offline videos (previously jwb-offline-import)
• Feeding videos to a video player (previously jwb-stream)

Compatibility breaking changes

Modes have changed names.

• html -> html_tree
• m3ucompat -> m3u_multi
• m3u -> m3u_tree