`.gv` and `.html` files include the version number as a comment.
Rebuild to avoid diffs during development

Moved metadata and options info further down, so that the core functionality (connectors, cables, connection sets) comes first.

- Use pin names instead of pin indices, until the last moment when generating the ports for the GraphViz nodes
- `Harness.add_mate_pin()` now uses pin names
- Remove unused `if is_arrow()` check from `Harness.connect()`
- Consolidate calling of `Connector.activate_pin()` to prevent subtle bugs
  - Call it from `connect()` and `add_mate_pin()`
  - No longer call it from `create_graph()`
- Misc. other tuning

Co-authored-by: kvid <[email protected]>

Co-authored-by: kvid <[email protected]>

Co-authored-by: kvid <[email protected]>

Co-authored-by: kvid <[email protected]>

Experiments in exporting PDF using `wkhtmltopdf` utility caused borders to disappear when set to 0.25mm, but 0.35mm renders fine

Re-add `parse_file()` for building examples

bla

Use `output_formats` parameter to specify which *files* to output to disk,
Use `return_types` parameter to specify which objects to return to a calling Python script

…nput

…aths

The two header comments were missing trailing newlines.

This behavior is introduced by v0.18 of the graphviz Python package;
where as v0.17 did include the newline automatically.

Closes #258

Changes in #186 made it impossible to hide cable wire numbers.

#186 (comment)

Hard-coding OS error numbers that differ between different platforms
caused the program to crash at platforms using a different error number.

Using the Standard errno system symbols will avoid this problem.

Co-authored-by: kvid <[email protected]>

- Resolves #263 that describes warnings and weird loop drawing because
  loop connected pins are hidden when hide_disconnected_pins=True.

- Activate loop pins as early as possible to enable correct counting of
  connected pins when
  connector.additional_components.qty_multiplier=populated.

- Check that loop pins actually exist before activating them.

No need to reference github issue in the code.

Co-authored-by: Daniel Rojas <[email protected]>

Add two more folders to be ignored.

- .idea: Used by PyCharm
- .venv: My convention for creating virtualenvs

Co-authored-by: kvid <[email protected]>