yeast 8.3.5

• Fixes:
  • Closes #129: Removed non-S288C genes (PR #211).
  • Closes #198: Fixes function for converting model to anaerobic (PR #199).
• Tests:
  • Added growth tests for carbon & nitrogen limitation (#199).
  • Added test for computing gene essentiality (PR #200).
• Documentation/Others:
  • Clarified with README's the purpose of each script/data folder (#209).
  • Closes #206: Updated citation guidelines (PR #210).
  • Updated contribution guidelines + issue/PR templates (PR #210).
  • Created folders with deprecated scripts (PR #209).