Updated travis to use dub 0.9.22 release
Updated audio.d for the reenwritening PR.
Merge branch 'develop' of https://github.com/Circular-Studios/Dash into develop
Fixed the docs link
Fixed openssl version issues
Merge branch 'develop' of https://github.com/Circular-Studios/Dash into feature/gl3.3
Fixed vsync in SDL

The SDL GL swap interval now properly reflects the value of
config.graphics.vsync
Fixed spacing in input.d
Added better version support to choosing an adapter
Added icon support for SDL

(searches for icon.bmp in Textures)
Also changed the version call in input.d to DashUseSDL2, as per the
change in graphics.d
Updated gfm:sdl2 to use window.setIcon()
Merge pull request #225 from Circular-Studios/feature/SDLAdapter

Feature: SDL Adapter
Added OpenGL3.3 support

Set the "OpenGL3.3" flag to true, under Graphics in the main
configuration file to enable.

Additionally, disabled ui on Linux systems until we get that fixed.
Merge branch 'develop' of https://github.com/Circular-Studios/Dash into feature/gl3.3

Conflicts:
	source/dash/graphics/adapters/sdl.d