Deprecate is_volume parameter with trackpy

[ttung]

1. is_volume is deprecated and documentation removed.
2. if someone passes in is_volume=False, we raise an error.
3. if someone passes in is_volume=True, we raise a warning.

Fixes #1818

[codecov-io]

Codecov Report

Merging #1820 into master will decrease coverage by 0.06%.
The diff coverage is 75%.

@@            Coverage Diff             @@
##           master    #1820      +/-   ##
==========================================
- Coverage   90.13%   90.07%   -0.07%     
==========================================
  Files         254      254              
  Lines        9461     9463       +2     
==========================================
- Hits         8528     8524       -4     
- Misses        933      939       +6

Impacted Files	Coverage Δ
...e/spots/FindSpots/trackpy_local_max_peak_finder.py	97.91% <75%> (-2.09%)	⬇️
starfish/core/_version.py	45.32% <0%> (-1.8%)	⬇️

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