D-Programming-Language/dmd — pull request #1287 by leandro-lucarella-sociomantic (2012-11-14 11:55:39+00:00)
Title: Make deprecations as warnings the default

Since wanting to have deprecations as warnings is probably what most
people wants, make it the default. Also rename -di to -dw and introduce
-de to get the old default behaviour of having deprecations as errors.
-d stays untouched for backwards compatibility and those crazy people
that doesn't even want to know about deprecated features.