New Group feature in CaWE

Another feature that we recently completed for the next release is the completely rewritten "Groups" support in CaWE. :wohow:

Finally removing the confusing and unnecessary distinction between "visgroups" and normal (but funnily enough, invisible) groups, finally cleaning up the awkward user interface for temporarily ignoring the grouping feature ("select as a whole" vs. "select members individually"), finally loading and saving groups in the map files and having modifications to them recorded in the Undo/Redo system, finally removing many other inconsistencies and adding the new "lock for editing" feature, we believe that the new Groups support in CaWE has been a worthwhile enhancement.

For more information, please read the updated Groups section in the documentation. :book: