Update master branch to Pastas 1.5

[raoulcollenteur]

Short Description

Big update for Pastas to version 1.5.

Checklist before PR can be merged:

• is documented
• Format code with Black formatting
• type hints for functions and methods
• tests added / passed
• Example Notebook (for new features)
• Remove output for all notebooks with changes

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +1.24% (target: +0.00%)	✅ 67.73%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (b9ef48b)	5975	4459	74.63%
Head commit (35a76fe)	6294 (+319)	4775 (+316)	75.87% (+1.24%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#741)	437	296	67.73%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[mbakker7]

Ready to go. Some minor things in Codacy that can be fixed next time.

[dbrakenhoff]

Some very minor comments, one comment about stderrs in interactive plots that can easily be picked up in the next release.

[raoulcollenteur]

Thanks for reviews! Ready to merge after merging #743 into Dev, to add the banner on the homepage as suggested by @mbakker7.