Typo: Pyments -> Pygments

Two small changes to add:

Extensions that failed to load had the wrong text for reloading extensions.
Fix problems that could occur with setting up an environment for running brz for Breezy (more likely to affect unit tests, but still).

Let's reference the doc:

:doc:`4.0.7`

pip3

I don't think we need this now that this is all on https.

http -> https in these.

Also:

oauth2_provider_accesstoken
oauth2_provider_application
oauth2_provider_grant
oauth2_provider_idtoken
oauth2_provider_refreshtoken
reviewboard_oauth_application

Let's be explicit about the beta status of each.

"or higher" isn't quite right, since there's explicit ranges that are supported.

We can use :pypi: here.

Only one blank line needed between parent and child sections with no content.

Let's move "Review Board now ..." to its own paragraph so it's less buried.

Let's link to these.
We should probably draft integration pages on https://www.reviewboard.org/integrations/ for each by release. Helps with references and SEO. Wanna put a task in Asana for this?

Two blank lines before reference definition blocks.

No need for the trailing period in the section header.

Let's switch these to pip3.

We should probably tell people where to go to find this.

We can say that this is the start, and that we have further improvements coming in beta 2.

This needs to be double backticks in ReST.
The table name is scmtools_tool though.

Same here.

Should be Title Case.

Should be Title Case.

I have one more thing that needs to go in (/r/12437), which will need to be included in here.
(That change targets 5.0 beta 1 for now, and will be backported to 4.0.8 after.)

Let's put these in alphabetical order.

So I wasn't going to make this a beta, but now I'm wondering if we should...
And if we should, we'll need this in the pip instructions above.

Ship It!