[similarity] Ignore scheduled posts and convert to LateTask

[JesperDramsch]

First of all, apologies for the messy PR. Most changes were due to black formatting. I didn't see any guidelines on linter or a contributor manifest but wanted to make sure it's PEP8 compliant.

Main changes:

• make similarity respect scheduled posts in similarity.py in line 49 or 52 respectively using post.publish_later.
• Change Task to LateTask to have it run after all the posts are rendered (and the folders are created) line 35, 39 in similarity.py and 6 in similarity.plugin

[JesperDramsch]

@Kwpolska hey, here's the PR. The checks failing seems outside of my control for now, but happy to work on it when the checks don't error out during setup.

[Kwpolska]

Thanks for fixing this!

First of all, apologies for the messy PR. Most changes were due to black formatting. I didn't see any guidelines on linter or a contributor manifest but wanted to make sure it's PEP8 compliant.

FYI, we use flake8 for our linter, balck is sometimes not compatible with flake8 — I fixed one such thing. Quite frankly, black did a terrible job at formatting this file, mainly due to the line length limit — we’re more liberal than that, and in my experience, black becomes readable past 100 and even better around 120 characters per line.

[JesperDramsch]

Ah that's fair. Thanks for the fix!