New Features

Model validation with new Validate() method on Project, Design, Fileset and File.
Reading of *.pro files from OSVVM's TCL scripting environment.
(see #24)
- TCL if statements are not handled yet.
Reading of *.xpr files from Xilinx Vivado contributed by @stefanunrein.
(see #17)
- Added TopLevel to FileSet class.
  (see #16)
- New VivadoFileMixIn.
Added Vivado 2021.1 project with XPR file, VHDL files and some XDC files.
(see #15)
First tests for universal attributes.
Example code snippet in README is tested via CI.
(see #12)
Implemented __len__ on Project, Design and FileSet.
Added AddVHDLLibrary to Design.

Changes

Delay publishing of documentation, so coverage and static type checking HTML reports can be published too.
(see #19)
Improved README.

Renamed imported Path class to pathlib_Path to fix some issues reported by mypy.
Fixed resolution of Design in FileSet if a fileset ist nested.
Fixed behavior of ResolvedPath.
Results from pytest are uncolored. In GH Actions, it must be enforced.
(see #18)
Coverage.py adds a .gitignore to the HTML report outputs.
(see #23)
This file needed to be deleted so coverage reports are visible on GH Pages.
Fixed job name of downloaded artifact.
Fixed dependencies for job 🗑️ Artifact Cleanup, so it cleans up even if no package was published to PyPI.