Get rid of elaston units

[samwaseda]

I got rid of the elaston units, but it turned out that the tests were not quite testing the unit functionalities inside elaston, so I'm adding more tests now.

[github-actions]

👈 Launch a binder notebook on branch pyiron/elaston/get_rid_of_elaston_units

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.34% (target: -1.00%)	✅ 100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (34582cf)	671	655	97.62%
Head commit (32def03)	586 (-85)	574 (-81)	97.95% (+0.34%)

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 (#61)	32	32	100.00%

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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[coveralls]

Pull Request Test Coverage Report for Build 12596956825

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.3%) to 97.952%

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Files with Coverage Reduction	New Missed Lines	%
linear_elasticity.py	1	98.61%
elastic_constants.py	1	99.16%

Totals
Change from base Build 12595238802:	0.3%
Covered Lines:	574
Relevant Lines:	586

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💛 - Coveralls

[samwaseda]

In principle more tests should be added, but there would be too many changes at once, so I merge this one for now.