Move the optimizer status codes back to a three value system

[H0R5E]

This is for consistent numbering (i.e. 1 is good, 2 is medium) and for integration with the GUI which needs to see that 0 is bad.

Bump version to 3.0.2

[AppVeyorBot]

✅ Build dtocean-core 3.0.2.build204 completed (commit 26b9a38e35 by @H0R5E)

[codecov]

Codecov Report

Merging #44 (1038efe) into master (778039e) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 1038efe differs from pull request most recent head 1c8ba2c. Consider uploading reports for the commit 1c8ba2c to get more accurate results

@@            Coverage Diff             @@
##           master      #44      +/-   ##
==========================================
- Coverage   71.71%   71.70%   -0.01%     
==========================================
  Files          56       56              
  Lines       13575    13575              
  Branches     1921     1921              
==========================================
- Hits         9735     9734       -1     
  Misses       3158     3158              
- Partials      682      683       +1     

Impacted Files	Coverage Δ
dtocean_core/strategies/position.py	97.14% <100.00%> (ø)
dtocean_core/utils/optimiser/noisehandler.py	84.61% <0.00%> (-0.65%)	⬇️

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