install debug into `builtins` via `DebugProxy` (samuelcolvin#139)

fix docs publish

Uprev 0.12.0 (samuelcolvin#138)

uprev mypy

uprev

prepare for release

cache pygments load (samuelcolvin#96)

* cache pygments load

* fix cache import

* linting

* replace "nocover"

update history

compatibility with python 3.8.6 (samuelcolvin#74)

* compatibility with python 3.8.6, fix samuelcolvin#73

* uprev

fix badges in readme