chore, pretend it's 2013 and update all file header copyright years

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'bld/dist'

* bld/dist:
  chore, pretend it's 2013 and update all file header copyright years
bump, release v0.2.5 is imminent

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>