Persist menu selection for bitsy.boot, bitsy.bye, basis & prodos.sys to Registry.
Add new cmd line '-bootsector <pathname>'.
Add BootSector (code & binary).
Add OS (basic17.system, bitsy.boot, quit.system; DOS33 & ProDOS2.4.3).
Update help doc:
. add workflow info to ddi-create.html.
. add new ddi-sizes.html, and ddi-advanced.html (for advanced workflow).
* Document the disk image size magic numbers (in source & help doc).
* Mention 40+ tracks after oddball disk sizes.
* Debugger 2.9.2.2: Fixed: DB HGR = 2000:3FFF was displaying help instead of being parsed.
* Debugger 2.9.2.3: Fixed: DB HGR = 2000:3FFF and DB FOO = 300 wasn't parsing correctly from 2.9.1.3. Fix for commit 48e0fe3a.
* Debugger: 2.9.2.4 Fixed: DA RESET = 3F2 was displaying help instead of being parsed.
* Debugger: 2.9.2.5 Added: Symbol table for DOS 3.3 using file A2_DOS33.SYM2
* Debugger: 2.9.2.6 Added: QoL: Turning a symbol table on/off now shows the current status.
