version 2 (5?) changes

[aforren1]

• [x] Faster timed response blocks
  • 300 ms period, rather than 500
• [x] Add catch trials
  • Update generation of timed response blocks
  • Make sure all drawing/correctness checking accommodates this...
• [x] Friendlier UI
  • Just ask for id/day/block, and pick the right files from there
• [x] Adjust timed response feedback
  • Strings are too long/appear too briefly to read. Maybe hollow square for right button + wrong timing?
  • Pre-make a small black square for "hollowing" purposes
  • Do same buildup thing as the rapid blocks for encouragement
• [x] Adjust rapid feedback
  • Only keep CCCOMBO going if press is within 500-600ms?
• [x] Headers for output
• [ ] Recheck force transducer sections with previous iterations.
• [x] Note about which type of trial it is (with instructions).