BUG: Fix indexing error when mask_and_scale=True was combined with band dim chunking

[fbunt]

• Closes IndexError on compute() when using mask_and_scale=True and dask chunking along band dimension #387
• Tests added
• Fully documented, including docs/history.rst for all changes and docs/rioxarray.rst for new API

[codecov]

Codecov Report

Merging #388 (a927e51) into master (008c2a2) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #388      +/-   ##
==========================================
- Coverage   95.86%   95.85%   -0.01%     
==========================================
  Files          13       13              
  Lines        1474     1473       -1     
==========================================
- Hits         1413     1412       -1     
  Misses         61       61              

Impacted Files	Coverage Δ
rioxarray/_io.py	95.12% <100.00%> (-0.02%)	⬇️

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[snowman2]

The latest test failure can be ignored. This looks good, thanks @fbunt 👍. Any issues if I squash and merge?

[fbunt]

Great! Nope, squash away

[snowman2]

Thanks @fbunt 👍