docs: Add debounce tutorial; order Pin methods; add pull resistor info.
docs: Add links from quickref to pyb classes.
docs: Update front page to display date of last update.
docs: Bump version to 1.3.6.

This needs to be done before actually tagging the new version.
unix: fast: Set initial module dict size big to have high pystone score.

For this, introduce MICROPY_MODULE_DICT_SIZE config setting.
Merge remote-tracking branch 'upstream/master'
upstream merge