[MISC]: Previous Specification Versions

[franklin-feingold]

Addresses: #228

This will link out to the previous specifications available through ReadTheDocs

[effigies]

Is there not a way to actually just get the normal RTD panel on the site?

[effigies]

e.g., On the bottom right of https://fitlins.rtfd.io, there is a panel that expands to:

[franklin-feingold]

I am searching through trying to find how to enable that. I found for sphinx, but looking more for markdown and work with the theme we are currently using. I know for fmriprep you have the panel too

[sappelhoff]

I did a search too and could not find that "hovering dropdown menu" to select versions (...for Mkdocs with Mkdocs-material theme).

I searched:

• plugins: https://github.com/mkdocs/mkdocs/wiki/MkDocs-Plugins
• issues: Manage multiple versions of documentation squidfunk/mkdocs-material#770
• ... and lots of unsystematic googling

it might not be possible to get this drowndown menu "out of the box".

I find the proposed solution in this PR an "okay" solution for now. It's not beautiful, but a small improvement.

However, the "wrong version" of v.1.1.2 (it should be v1.1.2 see also #229 #192 ) should be dealt with soon.

[effigies]

I dealt with the v.1.1.2 tag. This PR is superseded by #232.