MLTK version 0.20.0

MLTK version 0.19.0

MLTK version 0.18.0

MLTK version 0.17.0

MLTK version 0.16.0

updated docs

fixed issue with increasing BAUD rate when using https://siliconlabs.…

…github.io/mltk/mltk/tutorials/keyword_spotting_alexa.html#increase-the-baud-rate.

also increased buffer size to improve throughout when BAUD is 115200

Updated docs

Cosmetic change to docs

removed unsupported model