(Re-)Building the example projects

Commands

python build_examples.py to build generated files in all groups.
python build_examples.py compare to compare generated files in all groups against the last commit.
python build_examples.py clean to delete generated files in all groups.
python build_examples.py restore to restore generated files in all groups from the last commit.
python build_examples.py -V or --version to display the WireViz version.
python build_examples.py -h or --help to see a summary of the usage help text.

Append -b or --branch followed by a specified branch or commit to compare with or restore from (default: The last commit in the current branch).
Append -c or --compare-graphviz-output to the compare command above to also compare the Graphviz output (default: False).
Append -g or --groups followed by space separated group names to any command above, and the set of generated files affected by the command will be limited to the selected groups. Possible group names:
- examples to process examples/{readme.md,ex*.*}
- tutorial to processtutorial/{readme.md,tutorial*.*}
- demos to processexamples/demo*.*
Affected filetypes: .gv, .bom.tsv, .png, .svg, .html

Run python build_examples.py after any code changes to verify that it still is possible to process YAML-input from all groups without errors.
Run python build_examples.py compare after the rebuilding above to verify that the output differences are as expected after a code change.
Run python build_examples.py restore before adding and committing to avoid including changes to generated files after the rebuilding above.