threading: Release 0.1.

uasyncio: Release 1.2.

machine: Release 0.2.1.

optimize_upip.py: Script to optimize archives for low-heap upip usage.

uasyncio.core: Protect another case of debug logging with "if __debug…

…__:".

uasyncio: test_http_server_heavy.py: Comment out mem_info() call.

logging: Release 0.1.

Tag v0.1 to help with OpenWRT packaging.