allow to set array of recipients in RedirectingPlugin
add GMail XOAuth2 support
Update plugins.rst

fix grammatical bug
UPDATE: extended mime_types.php with autogenerated and sorted extensions
 using following public sources:
 > http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
 > https://raw.github.com/minad/mimemagic/master/script/freedesktop.org.xml
UPDATE: autogeneration php script for mime_types.php;
changed code formatting and moved autogenerate script to lib
git apply cs.diff (code reformat)
Added NTLM authentication
Travis tweaks
Whitespace fixes
minor #422 Whitespace Fixes (GrahamCampbell)

This PR was merged into the 5.1-dev branch.

Discussion
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Whitespace Fixes

Commits
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ef466d2 Whitespace fixes
minor #421 Travis Tweaks (GrahamCampbell)

This PR was merged into the 5.1-dev branch.

Discussion
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Travis Tweaks

Commits
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330225f Travis tweaks
feature #414 Added NTLM authentication (wardpeet)

This PR was merged into the 5.1-dev branch.

Discussion
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Added NTLM authentication

I added ntlm auth and tests. Not sure if the configuration files are right.

I cleaned my fork up and created a new pull request cause this was easier for me than cleanup the other repo. So it's the same as https://github.com/swiftmailer/swiftmailer/pull/388

Commits
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5292393 Added NTLM authentication
bumped version to 5.1.0-DEV
made some modification to previous merge
minor #327 Update plugins.rst (bghazy)

This PR was merged into the 5.1-dev branch.

Discussion
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Update plugins.rst

fix grammatical bug

Commits
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31facb1 Update plugins.rst
feature #412 extended and fixed mime_types.php with autogenerated extensions (pkracht)

This PR was merged into the 5.1-dev branch.

Discussion
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extended and fixed mime_types.php with autogenerated extensions

extended mime_types.php with autogenerated and sorted extensions using following public sources:
 > http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
 > https://raw.github.com/minad/mimemagic/master/script/freedesktop.org.xml

Commits
-------

7b7c7fd git apply cs.diff (code reformat)
55fe5b6 changed code formatting and moved autogenerate script to lib
967f710 UPDATE: autogeneration php script for mime_types.php;
12501f8 UPDATE: extended mime_types.php with autogenerated and sorted extensions  using following public sources:  > http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types  > https://raw.github.com/minad/mimemagic/master/script/freedesktop.org.xml
updated CHANGELOG
feature #303 Add GMail XOAuth2 Support (xu-li)

This PR was merged into the 5.1-dev branch.

Discussion
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Add GMail XOAuth2 Support

Commits
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245e0ac add GMail XOAuth2 support
updated CHANGELOG