Brining PHP library more in line with Node library
Don't try with extension if missing extension
Custom Attachment Names
Set minimum stability to allow dev - for unirest
Show that minimum stability dev setting is necessary
Update install instructions related to composer
Update README
Update README
That shouldn't use dev
Update README with example
Move to into smtpapiheaders - which is where it has been living. Starts process of breaking this data up classily
Refactors smtpapi related methods into their own class. Deprecates poorly named setHeaders, addHeaders, etc that actually have historically been setting X-SMTPAPI headers only. Deprecated so that the library continues to work for those using addHeaders with that expectation
Missing unique_args
Version bump 1.1.1
Merge pull request #53 from sendgrid/sm-smtpapi-headers

Sm smtpapi headers
Add in standard RFC 822 message headers
Version bump 1.1.2
Merge pull request #54 from sendgrid/sm-message-headers

Add in standard RFC 822 message headers
Say sys_log instead
Version bump 1.1.3