Added anonymous function as expression for first_or_default
adding unit testing and a bunch of improvements
Rebuilt everything from scratch. [NOT BUILDING]

Removed parameters and operators, replaced with lambdas only.
Still not building.
minor changes in mac osx
Trying to get to work with consts and stuff
Working version with some unit tests implemented
Merge branch 'dev'
Merge branch 'master' into feat_select_tuple

Conflicts:
	example/example.cpp
	include/lincxx.hpp