Add new actions:
- 'compare' action to compare generated files (except those
generated by Graphviz) against the latest commit, and
- 'restore' action to restore generated files from the latest commit.
This is a squash rebase of these commits:
- p 9ad3e13 Reduce code duplication by moving common code into a generic function
- s d4feae6 Add action to restore generated files from git repository
- s 64f6507 Add action to compare generated files against git repository
- s 099c202 Simplify code
- Use `pathlib.Path` instead of `os.path`
- Fix order of files while building
- Consolidate code for building demos, examples and tutorial
- Change argument from `tutorials` to `tutorial` to remain consistent
- Add some indentation in console output for better readability
- Shorten `part_number` to `pn`
- Shorten `manufacturer_part_number` to `mpn`
- Show `manufacturer` and `mpn` in a single cell of the node
- Replace `manufacturer` with `'MPN'`within the node if no manufacturer is specified.
- Rearrange order of P/N fields within node
`{pn} | {manufacturer}: {mpn}`
- Remove modified background color -> should be discusses as a separate feature
- Render shields as thin tinned wire with black border, safer for b&w priting than single light-gray line
- Remove PE as color definition, since it is not, and should be called with GNYE
- Clean up minor things
build_examples supports cleaning examples and intelligently will detect new examples.
SUGGESTION: When merging into dev, require
```
build_examples.py clean
```
and then only build when merging into master branch
Closes#67.
- Allow defining arbitrarily long lists of alternating connectors and cables in a connection set.
- Start work towards removing 'ferrules' as special case, merging them with normal connectors
- Stramline auto-generation of simple, one pin connectors (ferrules, wire splices, ...)
