Development branch that merges loose ends together

[jesper-friis]

Description

We are in a state with many open PRs with mutual conflicts. This branch merge them together and resolve conflicts.
It merges the following branches:

• context-module, PR Added context module #378
• keyword_bugs, PR keyword bugs #375
• master
• matchmaker-demo, PR WIP: Matchmaker demo branch #377
• fix-readme-link, PR Corrected link in readme file #379
• use_pyld, PR WIP: Use PyLD to ensure that the context is handled according to standards #376

Furthermore it has added support for the graph keyword (in a better way), replacing PR #360 as well.
See Tripper network for details.

The speed of tabledoc has been greatly improved. The PINK example with 1021 datasets now runs in a few seconds compared to minutes before...

Type of change

• Bug fix and code cleanup
• New feature
• Documentation update
• Testing

Checklist for the reviewer

This checklist should be used as a help for the reviewer.

• Is the change limited to one issue?
• Does this PR close the issue?
• Is the code easy to read and understand?
• Do all new feature have an accompanying new test?
• Has the documentation been updated as necessary?
• Is the code properly tested?

[codecov]

Codecov Report

Attention: Patch coverage is 84.37500% with 85 lines in your changes missing coverage. Please review.

Project coverage is 82.31%. Comparing base (51258ad) to head (d5b3453).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
tripper/datadoc/context.py	78.45%	39 Missing ⚠️
tripper/datadoc/dataset.py	85.90%	21 Missing ⚠️
tripper/datadoc/clitool.py	33.33%	8 Missing ⚠️
tripper/datadoc/keywords.py	89.85%	7 Missing ⚠️
tripper/datadoc/tabledoc.py	90.90%	5 Missing ⚠️
tripper/utils.py	92.75%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #380      +/-   ##
==========================================
+ Coverage   82.26%   82.31%   +0.05%     
==========================================
  Files          27       28       +1     
  Lines        3439     3749     +310     
==========================================
+ Hits         2829     3086     +257     
- Misses        610      663      +53     

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