Point highlighting & improved hints
minor fixes
Merge branch 'master' of https://github.com/mcquay239/cg

Conflicts:
	examples/operations/triangle_contains_point.cpp
graham bug fixes
[+] andrew's convex hull
[+] segments intersection example
[+] triangle intersects segment example
[+] rectangle intersects segment example
Hash maps for point & segment buffers
Merge pull request #12 from ZumZoom/fix

fixes + andrew's hull
Merge pull request #14 from lisyarus/draw

Drawer improvement
Merge remote-tracking branch 'upstream/master'

Conflicts:
	examples/convex_hull/CMakeLists.txt
	include/cg/convex_hull/andrew.h
	include/cg/convex_hull/graham.h
	include/cg/primitives/segment.h
	tests/convex_hull.cpp
after-merge fixes
multithreading in all tests
common visualizatorfor all convex hull algorithms