Fix missing FIT contributions

Remove broken support for legacy 16KB models

Bug fix

Update devices in readme

Add translation capability for speed / pace units

Revert constants to numeric literals for 16K devices because the BETA…

… compiler which can optimise them won't yet generate a production build package

Add support for latest devices

Add device support

Merge branch 'master' of https://github.com/wwarby/walker.git

Update readme, bump version