REFAC: KeyPressEvent renamed to KeyEvent, TetrahedralMeshRenderDelegate...

See merge request iMSTK/iMSTK!538

REFAC: Removed interactions directory for now, LevelSet-RigidInteractionExample renamed to FemurCutExample

REFAC: KeyPressEvent renamed to KeyEvent, TetrahedralMeshRenderDelegate topology change fix, plane to surface mesh function added to geometry utility

Additions and some DataArray fixes

See merge request iMSTK/iMSTK!537

prevent reserve from shrinking the the capacity

also adds unit tests for most of the DataArray and VecDataArray functionality
TBD: squeeze does not work as intended needs review

Fix bug in debugtriangleRenderdelegate where the data was not marked as 'unmodified' after an update

BUG: Debug delegates now process events within loop

See merge request iMSTK/iMSTK!536

REFAC: VisualObject removed, enum SceneObject types replaced with strings for later factories

See merge request iMSTK/iMSTK!535

Add the start and end events to the simulation manager

See merge request iMSTK/iMSTK!533

BUG: Viewers shouldn't be pausable by scene controller

See merge request iMSTK/iMSTK!532

BUG: Resolve a retain cycle in KeyboardSceneControl

See merge request iMSTK/iMSTK!531

Allow the mousescenecontrol to be turned on and off

See merge request iMSTK/iMSTK!530

ENH: RigidBodyController force smoothening, Lazy VisualModels for LevelSet-RigidInteractionExample

See merge request iMSTK/iMSTK!529