Added keep-alive connection to SMTP. Fixed socket read/write timeouts. Added PHP useragent
Fixed form helper variable error

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Move mikey179/vfsStream to only be required on dev
Fix a JSON validation error
Merge pull request #2257 from appleboy/helper

Fixed form helper variable error
Fixed tab-indentation. Made appropriate entries in changelog
Clean up
Fixed curly braces. Removed redundant method set_useragent()
Styleguide fixes
removed PR from the bug list
Removed the unused $force paramter in Email::_smtp_connect()
removed a stray tab
Merge pull request #2256 from nisheeth-barthwal/develop

Added keep-alive connection to SMTP. Fixed socket read/write timeouts. Added PHP useragent.
Set the --dev option for travis composer install command.
Set the --no-progress option for travis composer install command
Attempt to get travis to work by adding php-invoker
Revert "Attempt to get travis to work by adding php-invoker"

This reverts commit 1396a958a5b96cc6c617ae725034fa58542acd25.
Simplify the composer command
See how many errors are produced when no dependencies are included
vfsStream is required for travis