custom wx_unit validation behavior

[CagtayFabry]

Changes

• add support for custom unit validation via units_from_tagged and _get_instance_units
• numeric base types (int, float, ndarray) validate against dimensionless
• data_array now directly supports validation with wx_unit
• pd.Timedelta, pd.TimedeltaIndex and timedelta-like weldx.Time will validate against wx_unit: "s"

Related Issues

Closes #95

Checks

• updated CHANGELOG.rst
• updated tests
• updated doc/
• update example/tutorial notebooks
• update manifest file

[CagtayFabry]

We still have to think about the behavior when not unit information can be found or the property is missing as discussed in #184

[github-actions]

Unit Test Results

       1 files  ±0         1 suites  ±0   3m 1s ⏱️ -1s
2 163 tests +5  2 163 ✔️ +5  0 💤 ±0  0 ❌ ±0 

Results for commit 06a95bb. ± Comparison against base commit 96d9bbc.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Merging #739 (06a95bb) into master (96d9bbc) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #739      +/-   ##
==========================================
+ Coverage   95.88%   95.89%   +0.01%     
==========================================
  Files          92       92              
  Lines        6489     6511      +22     
==========================================
+ Hits         6222     6244      +22     
  Misses        267      267              

Impacted Files	Coverage Δ
weldx/asdf/util.py	90.64% <100.00%> (+0.44%)	⬆️
weldx/asdf/validators.py	98.13% <100.00%> (+0.01%)	⬆️
weldx/tags/core/data_array.py	100.00% <100.00%> (ø)
weldx/tags/debug/test_unit_validator.py	100.00% <100.00%> (ø)

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[CagtayFabry]

This should be ready to go now, feel free to merge if you agree @vhirtham 🚀

[marscher]

Thanks for this improvement. Would it be possible to also accept "" instead of"<space>"as an empty unit definition?

[CagtayFabry]

Thanks for this improvement. Would it be possible to also accept "" instead of"<space>"as an empty unit definition?

I'm not sure what happens with "" actually, maybe it works? (I guess it depends on what YAML parses from "" and what pint unit gets build from that)
Something like "dimensionless" should also work

maybe you can give it a try by making changes here and running the tests

weldx/weldx/schemas/weldx.bam.de/weldx/debug/test_unit_validator-0.1.0.yaml

Lines 59 to 61 in f64658d

	dimensionless:
	description: a basic numeric type without any units or dimensionless quantity
	wx_unit: " "