adding underscore templating to subject line
removing console, adding double curly braces to templates to conform to mustache
added check to make sure subject is being passed in
Merge pull request #4 from danielschwartz/templated-subjects

Templated subjects
updated; test suite
Release 0.2.2
fixed; package json typo
added; travis for 0.8.x
removed; support for node 0.4.x
Release 0.2.3
Changing global underscore templateSettings breaks underscore templating.
Merge pull request #5 from shawnburke/master

Fix: using winston-mail breaks global underscore templating
Allow only single line messages in the subject.

Messages with newlines break mail headers.
Merge pull request #6 from emergence/master

Allow only single line messages in the subject.
Release 0.2.4
Update lib/winston-mail.js

Fixed remarks and formatting
Update lib/winston-mail.js
Merge pull request #7 from eitanpo/master

Remark fix and formatting minor changes
added; peer deps
Release 0.2.5