markdown README so that hg.sr.ht can preview it

Update main window screenshot link in README

Tag v0.10.1

version bump to 0.10.1

enhances window border feature thing and adds a widget for it

Logging to a file when built and frozen

Some pyinstaller stuff

showing screenshots in the readme

Added tag v0.9.3 for changeset 0c035a404952

hiding unicorn button; version 0.9.3

Added tag v0.9.2 for changeset a255de045591

v0.9.2

fixes silly explosion in winhooker because lifetimes

connecting clear history button

Disabling history items when they're unavailable

refactoring and history saving

Removing old batch script for launching over pip install or whatever

Moved classes into their own special modules

refactoring and unicorn button

Adds FadeControls