`IRenderer::DrawImage` now accepts null image to draw solid color rectangle
Fixed a bug that null image might crash `DrawImage` with some overloads
`_TrN` is now working
Alerts
Capturing sky color
Reduced maximum number of lines of centered messages
Vibration on spade hit
Restore radial blur
pot update & Japanese translation update
Merge remote-tracking branch 'origin/master'
Software Renderer: Fixed crash in DrawImage
Updated devpaks
Add .travis.yml
Updated .travis.yml to make it valid
Updated .travis.yml (fix typo)
Add install command for dependencies to travis.yml
changed tar options
Updated .travis.yml
add -std=c++11
Clang C++11 support