Started Connections class
Started on computeActivity
Added Activity class
Update documentation
Fix test
Add Connections instance as property to Activity
Added import
Refactored Activity into a simple struct
Added ActivityContainer
Update Doxyfile
Remove ActivityContainer
Refactored test setup
Converted input to vector
Rename Activity to CellActivity
Implemented createSegment and createSynapse
Refactor returning by value to using return arguments
Implemented updateSynapsePermanence
Added skeleton for getMostActiveSegmentForCells
Pass references instead of values
Started on optimized design