fix bug - thanks to abuzittin gillifirca
http://codereview.stackexchange.com/questions/46531/reducing-code-duplication-in-a-geometric-function
Merge branch 'master' of git@github.com:erelsgl/rectangles.git
add numeric utils and point utils
Fix bug - thanks Flambino!
Add transformations unit;
start implementation of half-proportional algorithm