Merge pull request #23 from evaleev/master

Switched to std::begin and end in most places
Added complex conjugate in the reference implementation.
Merge pull request #24 from shiozaki/master

Added complex conjugate in the reference implementation.
Merge branch 'master' of https://github.com/evaleev/BTAS into evaleev-master

Conflicts:
	btas/varray/varray.h
after EBCO optimization, we need to revert my change not to issue a compilation warning.
Merge pull request #27 from evaleev/master

Switched default storage container: std::vector -> btas::varray
Merge branch 'master' of github.com:BTAS/BTAS
Merge pull request #28 from shiozaki/master

EBCO optimization has changed somehow the order of member variables
Merge pull request #7 from BTAS/master

sync with BTAS/BTAS