Batoto.net download plugin

Gets pages of comics from batoto.net. If entry is a series page, it
will use the most recently uploaded chapter. URLs for page images in
the chapter will be extracted and loaded into the entry's 'urls'.
Sets filename using title information from batoto and names pages from
their url.
Gets newest upload when given series page

Chapters on series pages are actually ordered by chapter number rather
than upload date. Now searches all chapters to find most recent upload.
Language option

Now understands a 'language' option and will filter results to only
ones in that language if set.
Find chapter matching title on series page

Will now attempt to find the chapter referenced in the entry's title
if given a series page, obeying any language settings.
Check times on series page chapters

If multiple chapters match the title, the most recent upload will now
be used.
Modify sequence_regexp

Plugin will now add a default sequence_regexp for parsing batoto
titles to any series with no [ID_TYPES]_regexp set. Also fixes a bug
in string_to_time().
Simplify language option

Plugin now takes language option directly as string rather than as
element in dict.
Allow multiple languages

Plugin can now accept multiple languages in config and accept chapters
matching any of them. There is no concept of priority so chapters
available in multiple languages will have the most recent upload
downloaded. Also fixes a bug in string_to_time().
Language priority

Languages now have priorities based on the order they are given to
plugin, with languages named earlier in config being preferred.
Add proper error handling

Plugin should now properly handle errors getting & parsing pages.
Tweaked some log messages
Import ID_TYPES and use to check series' regexes
Remove boolean config option
Plugin now functions without series

If series is not in use, plugin will now get the most recently
uploaded chapter matching language requirements.
Reorder imports
Small changes to chapter finding logic
Refactor series parsing logic into get_chapter()
Added documentation
Plugin handles from_group series requirement

Series with from_group requirements break on batoto as no entries have
group information available at filtering meaning no entries are
accepted. Plugin now removes series requirements to prevent this.
Update plugin to v1.2.0 compatibility