Re-separated header files and source files in Visual Studio.
(The problem was in JimmysCardboardCastle.vcxproj.filters, in case you're curious what that file's for, anyways.)
Fixed the bug with mouse motion not being detected when no buttons are pressed.
Added mousePressed, mouseReleased, keysPressed, and keysReleased.
Now data is available in inputInfo on whether mouse buttons and keys have been pressed in the last frame.
Organized solution files by base class in Visual Studio.