fixed minor leak
Add LICENSE.txt with the GPL v2.0+ license.

Per discussion at https://bitbucket.org/skiphs/amidst/issue/2
Merged in Freso/amidst/add-license (pull request #1)

Add LICENSE.txt with the GPL v2.0+ license.
fixed bug where image captures would come out incorrectly
fixed a bug where level.dat wouldn't show up on file selection
added old files from the original AMIDST rewrite
fixed bug where non-up-to-date users would crash on default profile select.
added corrections to handle more possible jar locations
Merge branch 'profile-detection-overhaul' into class-manager-overhaul
removed most references to ChunkManager
minor adjustments for new version detection
added classcheck files
updated class checker references
allowed for classes to be scanned for deobfuscation
removed unneeded searches
fixed searching for IntCache
Filter out large classes
updated new class detection system to actually work
fixed a bug in IntCache detection
fixed support for older versions of minecraft without WorldType