Innosetup

^^^^^

* fix a 'MinVersion' bug.

^^^^^^^^^^^^

* update readme and setup script.

^^^^^

* move download url to github.

^^^^^

* move repository to github.
* add a setup.py script.

^^^^^

* change versioning policy (remove build number).
* add utf-8 bom to .iss file by Jerome Ortais, thanx.
* pick up `COPYING` file for `[setup]/LicenseFile` by Jerome Ortais, thanx.

^^^^^^^

* add `regist_startup` option for create shortcut to startup.