- use python3 venv module to replace old bundled virtualenv module.
- upgrade docker build image and runtime image to debian buster based.
- bugfix: venv cache dir includes python version in dir name.

add Makefile for gocd integration

- added make ci-build and make deploy
- added app.yaml for k8s based deploy
- after-install.sh no longer run make install
- utils/build-deb grep add -q option
- Dockerfile.template apt use -qq option

- add makefile dependency for sanity-check
- let bootstrap-dev auto create log dir on dev machine

- bump yygame-utils pkg version to 0.15.0, which provides the @check decorator.

- bugfix: add fabfile.py in render file list
- add web.upstart and use that in deb-scripts
- update python .gitignore list
- PEP8 now ignores E402 module level import not at top of file
- http.site and https.site now use proxy_pass instead of uwsgi_pass

  Until uwsgi integration problem is fixed, I have to use other wsgi server.

- set default python version to python 3.4 in setup.py

  many of my new projects use python3 instead of python2.7.

use python3 in venv by default.

- put venv in .venv dir by default.
- python is now chosen by utils/choose_default_python.py

released on private nexus server.