Start grammar v3 validation script
Fix  some errors, add question types validation
Add types test for MultipleChoiceDetails
Add missing initialPosition in manySliders
Finish type testing on questions
Add value checks for questions
Start working on sequences
Start testing sequences
Add final tests on positions and such
Add url regex checks
Bump version announced
Let the shebang line decide what python version to use
Merge branch 'master' of github.com:daydreaming-experiment/parameters