Add LICENSE

I guess this was forgotten ?
Merge pull request #525 from Geod24/patch-1

Add LICENSE
Revert "Change named/anchored text ($(LNAME2 ...)) into subtle links to themselves"

PR #497 was merged prematurely.

This reverts commit d1dd9414a7d63461988a807dbc2c85068335310a.
Merge pull request #526 from JakobOvrum/revertanchor

Revert "Change named/anchored text ($(LNAME2 ...)) into subtle links to ...
Document templated opApply functions.
Merge pull request #529 from AndrejMitrovic/DocumentOpApply

Document templated opApply functions.
bool replaced bit
Merge pull request #530 from eco/patch-14

bool replaced bit