matrix_cl copy assigment now does a deep copy. Added move constructor, move assignment operator and fixed an event-related bug.
matrix_cl copy assigment now does a deep copy. Added move constructor, move assignment operator and fixed an event-related bug.

stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math