v0.11a2

This should be the last release for GUI-less helper.

Assuming nothing in this release needs immediate attention, the next one will contain an actual GUI. I don't know yet how usable it will be.

Changes since last release:

• Windows package: removed adb and obb -- you now have to provide them yourself (see readme for instructions on how to get those)
• Windows package: shortcuts in the form of batch scripts added
• Added helper_config, currently used for storing custom paths to adb and aapt
• Fixed installation with multiple obbs
• Made device initialization less prone to errors from unexpected input
• Created new branch for GUI-related stuff

Changes from a1 to a2:

• Windows package: fixed install shortcut
• Windows package: added cleaner shortcut
• Helper now ensures that all required files actually exist