Prepare release 3.7.4

Prepare release 3.7.3

Merge pull request CocoaLumberjack#1224 from CocoaLumberjack/bugfix/c…

…orrectly_deprecate_tag_field

Re-introduce _tag field and deprecate it

Merge pull request CocoaLumberjack#1217 from CocoaLumberjack/release/…

…3.7.1

Prepare Release 3.7.1

Merge pull request CocoaLumberjack#1174 from CocoaLumberjack/release/…

…3.7.0

Prepare Release 3.7.0 #trivial

Merge pull request CocoaLumberjack#1155 from CocoaLumberjack/rel_3.6.2

Prepare release 3.6.2 #trivial

Merge pull request CocoaLumberjack#1123 from CocoaLumberjack/release/…

…3.6.1

Version 3.6.1 #trivial

Merge pull request CocoaLumberjack#1099 from CocoaLumberjack/prepare_…

…release

Prepare release 3.6.0

Merge pull request CocoaLumberjack#1070 from sushichop/PR/wrapup-chan…

…gelog

Wrap up CHANGELOG for releasing 3.5.3

Merge pull request CocoaLumberjack#1052 from sushichop/PR/bump-3p5p2

Bump version to 3.5.2