latex template changes.

* Removed setting of `subject` in PDF metadata.
  This used to be set to the subtitle, but really the subtitle
  need not give the subject.  Also, `subtitle` can contain formatting,
  so we'd need, at least, a plain text version for this.

* Moved `header-includes` before setting of `\title`, `\author`,
  etc.  This allows these macros to be redefined.

* Use `\subtitle` command for `subtitle`, instead of tacking it
  on to the title as before.  We give a no-op fallback definition if it is
  not defined.  This change should produce much better results
  in classes that support `\subtitle`.  With the default article
  class, which does not define `\subtitle`, subtitles will no
  longer be printed unless the user defines `\subtitle` and
  redefines `\maketitle`.

* Moved redefinitions of `\paragraph` and `\subparagraph` to
  before header-includes.

1 files changed, 11 insertions, 6 deletions

diff --git a/data/templates b/data/templates
-Subproject ff9ebaa31ae31401e236574e81c2e75609adc72
+Subproject db3aec1a82d1f4f73e24217db8995ce27c48f7d