ADCP turbulence functionality

[jmcvey3]

Adds an ADCP turbulence class (analogous to ADV turbulence class) containing calculations for Reynolds stress tensor from beam variances, doppler noise, TKE dissipation and production.

Needs verification and testing.

[coveralls]

Pull Request Test Coverage Report for Build 4610513470

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 362 of 443 (81.72%) changed or added relevant lines in 20 files are covered.
• 48 unchanged lines in 6 files lost coverage.
• Overall coverage decreased (-0.6%) to 89.134%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
dolfyn/adp/clean.py	3	4	75.0%
dolfyn/binned.py	1	2	50.0%
dolfyn/io/rdi.py	4	5	80.0%
dolfyn/tests/test_shortcuts.py	2	3	66.67%
dolfyn/rotate/base.py	15	17	88.24%
dolfyn/tests/test_analysis.py	43	46	93.48%
dolfyn/velocity.py	54	63	85.71%
dolfyn/adv/turbulence.py	9	29	31.03%
dolfyn/adp/turbulence.py	170	213	79.81%
<!--	Total:	362	443	81.72%	-->

Files with Coverage Reduction	New Missed Lines	%
dolfyn/binned.py	1	86.83%
dolfyn/tests/test_analysis.py	1	89.91%
dolfyn/velocity.py	3	91.93%
dolfyn/adv/turbulence.py	4	80.85%
dolfyn/io/rdi_defs.py	6	90.77%
dolfyn/io/rdi.py	33	83.81%
<!--	Total:	48		-->

Totals
Change from base Build 4359628147:	-0.6%
Covered Lines:	5340
Relevant Lines:	5991

---

💛 - Coveralls

[lkilcher]

I think this would be a good time/place to add a calc_tilt function. i.e.: https://math.stackexchange.com/questions/2563622/vertical-inclination-from-pitch-and-roll