- Added clang (i.e. multi-compiler) support to convenience build scripts
- Updated README
- Added Bootloader build scripts for the two main versions currently used
- Added uartOut and usbMuxUart build scripts (these tend to suffer from build rot the most as they're only used in debugging)
- Attempt to get clang support for the Bootloader
  * clang is missing compiler extensions, so this may require a large re-write to get working

- Should make it easier to follow (originally the keyboards didn't have names hence the code-names)
- See https://github.com/kiibohd/KiiConf/issues/45

MD1     -> Infinity_60%
MD1.1   -> Infinity_60%_LED
MDErgo1 -> Infinity_Ergodox
KType   -> K-Type

- Changing default name from defaultMap.kll to scancode_map.kll
- Old name of defaultMap.kll will still work (and is the final fallback)
- Updated all the main projects to use the new name
- Updated BETKB (not entirely finished, but mostly complete)
- Added sub-use of interconnect scancode cache for converters
- Added infinity_led.bash

No behaviour changes, just restructuring.

Ignore all the default BuildPath directories created by the bash scripts
via cmake.bash.

bash might not be in /bin. Don't expect it there.

The compilation process itself doesn't take very long, but it's weird to
let it continue trying to build when we've encountered an error worthy
of changing cmake/make's return codes. This gives clear indication of a
failed build as the last line of the script's output.

- Includes minor fix for MD1

- Includes fix for over-range ScanCodes (would cause hard faults)
- Updated some documentation
- Requires recent kll compiler for the layout

TODO:
 - Add Windows Cygwin support