Lockless multi-threaded reads

[TomAugspurger]

• Closes Issue with locking when reading from multiple threads with Dask #214
• Tests added
• Fully documented, including docs/history.rst for all changes and docs/rioxarray.rst for new API

[TomAugspurger]

Here's a link for the new notebook: https://nbviewer.jupyter.org/github/corteva/rioxarray/blob/73ea5e24d968202f48ca8812f5c00104f9139638/docs/examples/read-locks.ipynb

[codecov]

Codecov Report

Merging #224 (ec80e6c) into master (97c0d4f) will increase coverage by 0.01%.
The diff coverage is 93.33%.

@@            Coverage Diff             @@
##           master     #224      +/-   ##
==========================================
+ Coverage   92.13%   92.15%   +0.01%     
==========================================
  Files          11       11              
  Lines        1259     1287      +28     
==========================================
+ Hits         1160     1186      +26     
- Misses         99      101       +2     

Impacted Files	Coverage Δ
rioxarray/_io.py	87.50% <93.33%> (+0.45%)	⬆️

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[snowman2]

This is really nice 👍. I like that there are different options available for the file manager.

[justingruca]

Looks good, just a couple text changes.

[TomAugspurger]

Whoops, thanks. Fixed those typos.

[snowman2]

@TomAugspurger would you like to squash your commits or do you mind if I do a squash and merge?

[TomAugspurger]

Squash and merge is fine by me.

[snowman2]

Thanks @TomAugspurger 👍

[TomAugspurger]

Thanks!