Cry 'Havoc!', and let slip the dogs of war.
Merge branch 'master' into remove-dimensionless

Conflicts:
	quantities/dimensionless.hpp
Some progress
That this foul deed shall smell above the earth
:'(
Might as well remove that.
Only linker errors!
Now it builds!
Now it passes the tests!
Missing fix
Another fix.
Fix tests
After pleroy's phone review.
Remove more double refs, fix build
tyyo
After pleroy's review and discussion.
Merge pull request #97 from eggrobin/remove-dimensionless

Remove dimensionless