RUM Version 2 Support Beta

Update php-http/socket-client and update socket-client constructor ar…

…guments

Fix log function and get trace checking

Capture post data default to false

Able to add custom configuration for the Logger and different transpo…

…rts (stackify#15)

Merge pull request stackify#9 from stackify/SF-3436

SF-3436: Mask HTTP Authorization header

Merge pull request stackify#8 from dimitrytarasov/master

Back-trace filtering improvements