[#4645 state:resolved]
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

[#4626 state:resolved]
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Changed encoding behaviour of mail, so updated tests in actionmailer and bumped mail version to 2.2.1
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Adding ability for the procs to be called within the instance, allows you to pass results from instance methods to the mail header
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Mail::Part now no longer has nil as a default charset, it is always set to something, and defaults to UTF-8

Removing quoting.rb, upgrade to 2.1.3.6, changing all utf-8 references to UTF-8, updating tests where incorrect encoding

* Don't depend so much no the message in a NameError
* Reset the delivery method properly

Improve performance of the rendering stack by freezing formats as a sign that they shouldn't be further modified.

Finish cleaning up rendering stack from views and move assigns evaluation to controller (so plugins and/or controllers can overwrite just one method).

Fix a bunch of failing AP / AM specs created from the previous AbstractController configuration refactor.

This reverts commit eec2d301.

This commit broke tests. You cannot have a file called "bundler" on the load path.

Adding options to register observers and interceptors through ActionMailer::Base.register_observer and ActionMailer::Base.register_interceptor.  These hook into Mail.register_interceptor and Mail.register_observer.  Also bumped Mail requirement to 2.1.3
Signed-off-by: NJosé Valim <jose.valim@gmail.com>