Module for designing keyboard layouts

Changes for 0.76

• New key @modkeys_vk (for a hash; remapping of scancode not implemented yet! — NOW IT IS). Emit MODIFIERS section if mods_keys_KBD is non-empty. Emit human-readable descriptions of modifier columns. Almost done: document parts of the syntax of .kbdd file left “TBC” from version 0.13. (A few TBC still remain.) Start documenting yet newer syntax. (Many more TBC appeared…) Document the mutator rules “pseudo-faked-***”. Comment code to handle prefix(NOTSAME(case)?)? in @output_layers. Likewise for the mutator prefix(NOTSAME(case)?)?. Implement the case-variant of the latter one. (Untested.) A bit more clear comment about <reveal-substkey>. Change prefix AltGr to Altern for CharSubstitutions CharSubstitutionFaces CharSubstitutionLayers (old names deprecated). Remove duplicates from the table of scancodes; remove VK_-codes (SHIFT..EXECUTE etc, NUMPADn, DECIMAL) crept in. Produce “fake” scancodes 0xe0e* for NUMPADn/DECIMAL (which on non-exotic keyboards are not assigned scancodes, but are translated from Insert/End/etc. as needed by the kernel). Can MSKLC treat this without breaking? It handles NUMPADn (as good as with other codes - and it does not update E0 map!), but allows DECIMAL only on sc=53. It even REMOVES from the e0-map the ADDED e0nn codes (X5E removed by e05d OEM_AX)! Document this into GOTCHAs. Remap DECIMAL to sc=53. Document kbdutool not giving a way to assign a scancode. Scancodes on VK settings were ignored. Allow the VK settings to define only the scancode. Massive simplifications in the suggested workflow of creating the DLLs. Update LIMITATIONS and Copyright in the docs.
• izKeys.kbdd: Change “fake” prefixes (for extra layers) to be above 0fff (to free space; add 9000). Change Compose and Compose³ accessors 06e8 → 06fe, 06f0 → 06ff. Change AltGr-arrows accessors 06f4 → 06fa ... 06f7 → 06fd. ONLY 06fa..06ff remain used in the range 06e0..06ff (where we put non-automatic “strange” prefix keys). !!! Different massaging!!! XXX in 00b01 00b03 Remove <any-circled>+<reveal-substkey> which seems to have no effect. Update COPYR_YEARS. Redefine VK-codes of APPS and KANA. (Now no patching is needed with conversion by klc2c.pl!)
• izKeys-visual-maps-base.html Start updating the described bindings.
• examples/klc2c.pl One of TODO issues got into a root TODO file. MODIFIERS section is processed now. Unhardwire massaging SHIFTSTATE (as for izKeys): now takes into account MODIFIERS (we ignore RMENU for massaging). Code to emit the _extern.h file. Make more readable comments in the emitted file, and include a license info. Produce extra header and C files, and .DEF and .RC files. Support lines in layout with only scancode and VK-code (to force a scancode). Create the table of scancodes matching exactly what is on Type 4 of kbd.h. Fill the value for VK_POWER (from Google search) which is used in the table above for scancode e05e. (But do not they confuse it with the scancode???) (Maybe it is better not to convert it to a scancode???) Support redefinition of scancodes. Ignore fake scancodes (in the range 0xE0E0..0xE0EF) for NUMPADn/DECIMAL. (Untested when X/Y-scancodes need to be added.) Special-case DECIMAL-on-53 too. Autogenerate KBD_l with l in U V W as needed. Option --comment-vkcodes=VK_first,VK_second would comment out emitting the specified VK-codes (with "VK_" omitted). Support empty LAYOUT, DEADKEYS or LIGATURE, KEYNAME, KEYNAME_EXT.
• Changes One row in the description of v0.60 was garbled.
• examples/build_here.cmd Remove the parts relying on kbdutool. Use --comment-vkcodes=OEM_8 for the Latin version. Update which files are included into src.zip.
• logo-base.html Fix 06f5 ⇝ 06fb etc. due to changes to .kbdd