optimize images
fixed general statistics Try It
added sameAs microdata
Merge branch 'develop' of github.com:sendgrid/docs into develop
Merge pull request #424 from ws/develop

Swiftpocalypse
combined last_modified and sitemap plugin

because jekyll has no mechanism for dependency management amongst
blugins and further (apparently) changes the order in which it loads
plugins between versions
changed travis version reporting
updated travis url
version update
Update marketing/variations/schedule

Closes #411
Allow duplicates in the Sub header
update link for SPF as per Bryan Hammerquist
Merge pull request #427 from sendgrid/#411

Update marketing/variations/schedule
Update subuser/apps

Closes #422
add unsubscribes guide
updated subscription widget guide

closes #406
Update smtpapi/uniqueargs

Closes #383
change prod build to use same dynamic "version" as staging
add "staging" keyword to develop branch deploys and change GA stub version check
Updated parse.html

Updated to reflect the API's real behavior