New: Migration scripts added to repo (fixes #201)

[swashbuck]

Fix #201

Part of adaptlearning/adapt_framework#3631

New

• Migration scripts added to repo

Migration milestones

2.0.1

• Add _recordInteraction

2.0.3

• Add _canShowModelAnswer

2.1.0

• Add _canShowMarking

2.1.2

• Add _canShowFeedback

2.2.0

• Add feedback title
• Add _shouldResetAllAnswers in different commit

3.0.0

Lots of schema changes, but mostly just moving things around

• Update globals ariaRegion default

4.0.0

• Update _isRandom default to false

4.2.0

• Add globals ariaCorrectAnswer
• Add globals ariaUserAnswer

6.0.0

• Add _hasItemScoring
• Add _allowOnlyUniqueAnswers

7.2.0

• Update default instruction text

7.2.1

• Add ariaQuestion (component)

7.3.0

• Add _isRandomQuestionOrder

7.4.1

• Add _hasItemScoring (v1 schema only)
• Add _allowOnlyUniqueAnswers (v1 schema only)

7.5.0

• Add globals correctAnswerPrefix
• Add globals correctAnswersPrefix
• Add _canShowCorrectness

[swashbuck]

Ready for review.

[chris-steele]

Thorough job @swashbuck, just added a few comments; nothing major 👍