Bump to version 0.15

Changes since 0.14:
* Rename mydraftwatermark -> xdraftwatermark
* Added nodraftwatermark option and ifdraftwatermark macro
* Added pagebreak and nopagebreak options
* Added missing \DUTif... versions of user-visibile \if... macros
* Refactored makeapprovalform
* Added LyX layout drexel-thesis.layout
* Bundled USEFUL_PACKAGES pulled from the local TeX installation
* Give \draftmarksetup example based on Travis Hoppe's thesis
* Assorted documentation cleanups

drexel-thesis.dtx

@@ -1,16 +1,16 @@
-% \def\fileversion{0.14}
-% \def\filedate{2010/09/21}
+% \def\fileversion{0.15}
+% \def\filedate{2013/05/21}
 % \iffalse meta-comment
 %<*driver>
 \ProvidesFile{drexel-thesis.dtx}
 \documentclass{ltxdoc}
 %</driver>
 %<*class|driver>
-\def\fileversion{0.14}
-\def\filedate{2010/09/21}
+\def\fileversion{0.15}
+\def\filedate{2013/05/21}
 %</class|driver>
 %
-% Copyright (C) 2010-2012  C.Y. Ip
+% Copyright (C) 2010-2013  C.Y. Ip
 %                          Christopher D. Cera
 %                          Christopher S. Dahn
 %                          Daniel J. Cross