add deprecation mention for 'after'

Fixes #880
Merge branch 'deprecate-after' into devel

Add deprecation note in the documentation of 'after' hook.

Fixes #880
add update_authors.pl

A small utility to harvest all the contributors to the project
contributors since last release
self-promotion to core team :-)
tally all the changes since last release
bumping version to v1.3111
cleaning MANIFEST
Merge branch 'v1.3111-grooming' into devel

preparations for the release
Issue 636

Added handling of binary files while testing file upoads in Dancer::Test.
removal of trailing whitespaces
update changelog
Merge branch 'pr/893' into devel

Fixes #893
Fixes #636
Document that response_exists and response_doesnt_exist are deprecated.
Test with defined, not length, to avoid warnings.

@melmothX reported that this is spamming the logs with uninitialized variable
warnings.
changelog

Fixes #899
Merge branch 'pr/899' into devel
Fix bug (request->header inside routes of Dancer->dance($request) threw error exception)
Amend changelog
Merge branch 'pr/702' into devel