Pyumldiagrams

This is release mainly to support Pyut association lines. Took the time to fix the following and do some refactoring updates.


* https://github.com/hasii2011/pyumldiagrams/issues/40 Used data classes in PdfDiagram 🏷️
* https://github.com/hasii2011/pyumldiagrams/issues/39 Regenerate documentation 📝
* https://github.com/hasii2011/pyumldiagrams/issues/37 Update pdoc3
* https://github.com/hasii2011/pyumldiagrams/issues/36 Update Pillow to latest 📌 ⬆️
* https://github.com/hasii2011/pyumldiagrams/issues/35 Update fpdf2 to latest 📌 ⬆️
* https://github.com/hasii2011/pyumldiagrams/issues/34 Add new LineType 🚑
* https://github.com/hasii2011/pyumldiagrams/issues/33 Update packaging process

**Security & Infrastructure Update**. :shipit:

I was planning to update to python 3.9.x. Github dependabot found security issue in Pillow dependency; Also, when I updated binary compares of .pdf test files were failing; So I changed the comparison method until I find a better one.

* https://github.com/hasii2011/pyumldiagrams/issues/31 Update how to compare PDF files
* https://github.com/hasii2011/pyumldiagrams/issues/29 Update docs to match current release
* https://github.com/hasii2011/pyumldiagrams/issues/28 Update to fdp2 version 2.3.2
* https://github.com/hasii2011/pyumldiagrams/issues/24 Figure out how to support OpenGL in pygame 2.0.0
* https://github.com/hasii2011/pyumldiagrams/issues/21 Update to Python 3.9.0

Minor update to correctly display method parameters; See issue 27

* https://github.com/hasii2011/pyumldiagrams/issues/26 Use diff to compare generated .png files
* https://github.com/hasii2011/pyumldiagrams/issues/25 Add ability to timestamp pdf files
* https://github.com/hasii2011/pyumldiagrams/issues/23 Use diff to compare generated .pdf files
* https://github.com/hasii2011/pyumldiagrams/issues/22 Manually fix numpy
* https://github.com/hasii2011/pyumldiagrams/issues/20 Respect Method Parameters display
* https://github.com/hasii2011/pyumldiagrams/issues/19 Diagram generation not respecting field/method/stereotype display

Fixed Issue

(https://github.com/hasii2011/pyumldiagrams/issues/18) Better name for PDFDiagramLine
(https://github.com/hasii2011/pyumldiagrams/issues/17) Fix big class bug
(https://github.com/hasii2011/pyumldiagrams/issues/15) Fix image write method

Issues Fixed, Enhancements implemented

* (https://github.com/hasii2011/pyumldiagrams/issues/16) Support XML Input for unit test
* (https://github.com/hasii2011/pyumldiagrams/issues/13) Update to Python 3.8.5
* (https://github.com/hasii2011/pyumldiagrams/issues/12) Rename PDF classes for clarity
* (https://github.com/hasii2011/pyumldiagrams/issues/10) Needs to draw lines with bends
* (https://github.com/hasii2011/pyumldiagrams/issues/9) Fix methodRepr regression
* (https://github.com/hasii2011/pyumldiagrams/issues/6) Update generated documentation
* (https://github.com/hasii2011/pyumldiagrams/issues/5) Refactor to allow for image generation