Removed an unused import
Merge branch 'master' of https://github.com/potocpav/vSLAM
Incorporated dt calculation for a better prior pose estimate.
Constant-velocity model
Merge branch 'master' of https://github.com/potocpav/vSLAM
Merge branch 'master' of https://github.com/potocpav/vSLAM
Changed the display function to use stock Viz.
Changed serialization phi-value to be positive (breaking serialization
compatibility)