Alpha 8 Changes

- Opening configuration files no longer adds them to the current project
- Creating a new project with a path that doesn't end in a slash no
longer causes an error when compiling
- Added warning if XInput9_1_0.dll is not found, compiled apps now
depend on it
- IDE now remembers the order of tabs within a project
- When opening a project the IDE now opens files at last known cursor
position
- Added install dialog to IDE Tools menu to allow manual installation of
projects and tier 2 files