v1.12.1

Additions

• [4chan] add extractor for entire boards (#510)
• [realbooru] add extractors for pools, posts, and tag searches (#514)
• [instagram] implement a videos option (#521)
• [vsco] implement a videos option
• [postprocessor:metadata] implement a bypost option for downloading the metadata of an entire post (#511)

Changes

• [reddit] change the default value for comments to 0
• [vsco] improve image resolutions
• make filesystem-related errors during file downloads non-fatal (#512)

Fixes

• [foolslide] add fallback for chapter data extraction
• [instagram] ignore errors during post-page extraction
• [patreon] avoid errors when fetching user info (#508)
• [patreon] improve URL pattern for single posts
• [reddit] fix errors with t1 submissions
• [vsco] fix user profile extraction … again
• [weibo] handle unavailable/deleted statuses
• [downloader:http] improve rate limit handling
• retain trailing zeroes in Cloudflare challenge answers