Pico fixes

• Now detects Xiao EPS32C3
• Set Pico buffer size to 32
• Fixed timezone adjustment for Pico
• No longer tries telnet if port contains a /

Fix --buffer-size with USB based devices

Also modified default for RPi pico to be 32

Add support for Raspberry Pi Pico

This release adds support for the Raspberry Pi Pico

v0.0.28

• Updated README.md with some more information about serial port permissions
• Be more patient in send_file_to_remote.

v0.0.27

• Fixed set_time function to work on PyCom boards
• Improved reporting on the rsync command (it's now reports each file processed)
• Added a date command