Make maktaba and its tests compatible with vim >= 8.2.2434.

[snu5mumr1k]

1. Acknowledge more detailed error reporting when parsing JSON.
2. Remove unnecessary (for what I understand) circular dependency.
3. Remove excess errors from comparison examples as they seem not to be relevant anymore (even on earlier versions of vim).

fixes #239

[snu5mumr1k]

I'll need to also update the docs.
How does one regenerate them?

[dbarnett]

I'll need to also update the docs. How does one regenerate them?

Install vimdoc from https://github.com/google/vimdoc (from the deb at https://github.com/google/vimdoc/releases/tag/v0.7.0 on Debian-based Linux systems or with python3 setup.py install), and then run vimdoc . in the plugin path. I can pull the changes and regen docs on my end if you have trouble.

BTW, did git mark the files as copied? It'd be helpful to have that with so much copied code, but in GitHub the diffs don't show comparison to the original.

[snu5mumr1k]

BTW, did git mark the files as copied?

Yeah, I forgot how annoying git can be. It took me a couple of rebases and force pushes to make everything better.

I would like to set up github actions, not to deal with travis failing, so let's submit that pr first.

[dbarnett]

Looks great! THANK YOU for seeing this change through! Merging…