We received an official permission from Arnold G Reinhold to use the
name 'diceware' under the following conditions:

1) we use Pythons `system.random` as default source of randomness
2) we continue to provide support for real dice
3) we do not use the name for other tools than this commandline tool
4) we include the trademark statement commited hereby.

Many thanks go to Mr. Reinhold.

Fixes #48.