bkw777/mainline v1.1.9

on GitHub

CHECKSUMS - new config option verify_checksums. When true, downloads the
CHECKSUMS file before downloading .deb files, extracts the sha256 hashes,
and uses them to verify the .deb file downloads.

Improved config file and built-in defaults handling

Improved notification script reliability.

Removed CHANGES file and button. It's essentially redundant with the PPA button, and slows down the cache updates.

Add Notes button. Creates/opens notes.txt in individual kernel's cache subdirectory