Consolidate some test lines
Consolidate more tests to remove duplication
More test consolidation
Consolidate a bunch more tests
Added a list of items to do
Linear Interpolator with pending tests
Update TODO
Frames must be tables for interpolator
ID parameter tests
Frame parameter tests
Clarify functionality when two frames recorded with same ID
Tests for frames having values other than number type
Added tests to ensure both frames have the same keys
Added check to pass unit tests for both keys existing in both frames
More tests + boundary cases
Update TODO to be checkmarked