Bumped version.
Removed v.
Fixed signed/unsigned comparison.
Please fix constructor for emplace with clang.
Fixed types and added constructors for old clang.
Merge pull request #46 from simongog/emplace_back_intersect

Implemented missing constructors for intersect_t
Added assignment operator.
Too late at night...
Merge pull request #47 from simongog/emplace_back_intersect

Added assignment operator.