Update documentation with new features and instructions for new blocks

[menon-karthik]

Current situation

Closes #66
We recently had a few new features implemented (or in soon-to-be-merged PRs). So I made some updates to the documentation to reflect those changes.

Release Notes

• Added a new page documenting how to add new blocks.
• Added a new section on contributing to the code.
• Added documentation on Function input feature for time-dependent boundary conditions #108
• Added documentation on Simulate an open-loop 0D model until it converges #109
• Added short summary of available blocks (including new ones)

Documentation

This is the documentation.

Testing

Documentation builds. Did not change anything else.

Code of Conduct & Contributing Guidelines

• I agree to follow the Code of Conduct and Contributing Guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.25%. Comparing base (688cece) to head (db7deda).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #113   +/-   ##
=======================================
  Coverage   79.25%   79.25%           
=======================================
  Files          52       52           
  Lines        2179     2179           
  Branches      278      278           
=======================================
  Hits         1727     1727           
  Misses        452      452           

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[mrp089]

Looks very nice! Thank you for updating the documentation! I added a few minor ideas.

[mrp089]

The macos-11 GitHub runner is not available anymore as of July, so I removed it.

I added a macos-latest runner (and ubuntu-latest) so we always stay up to date. However, there seems to be a problem with conda. Up to you, @menon-karthik, if you want to do this upgrade now or leave it for a later PR.

[menon-karthik]

The macos-11 GitHub runner is not available anymore as of July, so I removed it.

I added a macos-latest runner (and ubuntu-latest) so we always stay up to date. However, there seems to be a problem with conda. Up to you, @menon-karthik, if you want to do this upgrade now or leave it for a later PR.

I think it's a good idea to stay ahead of the curve, so let's upgrade that right away. I fixed the conda problem by using conda-incubator to find conda and add it to the path. Also, it looks like macos-12 is also going to be removed soon. I will create a new issue and PR to upgrade that just so it is recorded.