DOC: Chart Using PyGal added

[ssavi-ict]

• Graph and Chart with Pygal documentation added
• CHANGELOG modified accordingly.
• Fixes Doc: provide an usage example of combining fpdf2 with Pygal #652

Checklist:

• The GitHub pipeline is OK (green),
  meaning that both pylint (static code analyzer) and black (code formatter) are happy with the changes of this PR.

• A unit test is covering the code added / modified by this PR

• This PR is ready to be merged

• In case of a new feature, docstrings have been added, with also some documentation in the docs/ folder

• A mention of the change is present in CHANGELOG.md

By submitting this pull request, I confirm that my contribution is made under the terms of the GNU LGPL 3.0 license.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (f3dadb3) 92.67% compared to head (4f81870) 92.67%.

❗ Current head 4f81870 differs from pull request most recent head 6c9d225. Consider uploading reports for the commit 6c9d225 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #762   +/-   ##
=======================================
  Coverage   92.67%   92.67%           
=======================================
  Files          27       27           
  Lines        7275     7275           
  Branches     1317     1317           
=======================================
  Hits         6742     6742           
  Misses        337      337           
  Partials      196      196           

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[ssavi-ict]

@Lucas-C , the latest commit did not pass all the checks. Could not understand why it happened. Can you please guide me?

[Lucas-C]

@Lucas-C , the latest commit did not pass all the checks. Could not understand why it happened. Can you please guide me?

It was nothing serious, there must have been a bit of heavy load on GitHub Actions runners and our performance tests failed to pass the configured execution time threshold. Re-running the failed tests should fix this.

It has nothing to do with the content of your PR, so you really don't have to bother 😊

[Lucas-C]

Merged!
Thank you very much for your contribution @ssavi-ict 😊

[ssavi-ict]

Thank You @Lucas-C . It is my absolute pleasure. I am intended to do more contribution. And hopefully I can do that.

Just to let you know, there are some links broken like this one. There are some other unbroken links present. I would like to raise a PR fixing this issue.

[Lucas-C]

Thank You @Lucas-C . It is my absolute pleasure. I am intended to do more contribution. And hopefully I can do that.

You would be very welcome!

Also, if you have suggestions to improve the library, please share them 😊

Just to let you know, there are some links broken like this one. There are some other unbroken links present. I would like to raise a PR fixing this issue.

Oh you men on this page? https://pyfpdf.github.io/fpdf2/index.html#tutorials
You are absolutely right. I renamed some tutorial files in f9cf1b1 but I think I forgot to update some links in docs/index.md. A PR fixing that would be very welcome!

[Lucas-C]

By the way, the documentation section you added is now public!
https://pyfpdf.github.io/fpdf2/Maths.html#using-pygal