Unified include guards to pragma once
Tagged GetConvergenceMeasure method as const
Extracted base class for tracking
Preserving in case of loss
Merge branch 'ransac' of github.com:turinevgeny/rapid into ransac

Conflicts:
	.gitignore
	src/CMakeLists.txt
	src/Model.hpp
	src/RAPIDTracker.cpp
	src/RAPIDTracker.hpp