Removed tabs
Deleted generated file gen/com/gyrovague/dualnback/R.java
Guess audio and video separately until next trial: removed both button.
Rounded blue square corners. Smaller center cross.
Feedback through button font color. Added success rate message.
android update project --target 1 --name DualNBack --path .
Global threshold for audio & visual stimulis
Save last level
Use chklqrst letters by default, add an option to randomize later.
Set default minimum level to 2
Updated instructions
Merge pull request #3 from xantares/master

- Guess audio and video separately. There is no "both" guess. If both audio and visual repeat then guessing aither audio or visual is correct.
- Buttons change font colour to indicate guess correct/incorrect.
- Even if you fall below the 50% correct threshold you must do so 3 times before you fall to a lower level.
- Persist the current level in the user preferences.
- Do not randomize consonants, fixed to a list of 8.
- General linting, excluding auto-generated files.