Turbo assembler rewrite

This release massively improves performance and reduces memory footprint by abandoning QuickBasic in favor of x86 assembly. It now works well on a meager 286 and uses as little as 5 KiB of RAM (plus the database entries).

Changelog:

• You can send CTRL + C to immediately terminate the program.
• The sorting algorithm can no longer exhaust the stack space.
• The LIST command character has been changed to *.
• A welcome screen is displayed after the program database is loaded.

Initial release

1.0.0

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