Upgrade to OpenGL 3.3 at a minimum

[nschimme]

We probably don't want this. A logical next step would be to support OpenGL 4.1 natively.

[codecov[bot]]

Codecov Report

:x: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 66.23%. Comparing base (26d1a9d) to head (f70ab50). :warning: Report is 125 commits behind head on master.

Files with missing lines	Patch %	Lines
src/configuration/configuration.cpp	0.00%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #394      +/-   ##
==========================================
- Coverage   66.48%   66.23%   -0.26%     
==========================================
  Files          85       86       +1     
  Lines        4186     4220      +34     
  Branches      255      257       +2     
==========================================
+ Hits         2783     2795      +12     
- Misses       1403     1425      +22     

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[nschimme]

replaced by https://github.com/MUME/MMapper/pull/413