Activate logging.

Logging was available all the time but not yet activated. We now
enable logging when the main script is executed. This makes the
`verbose` commandline option functional.

CHANGES.rst

@@ -21,6 +21,7 @@ Changes
 - Fixed #31, broken `realdice` source of randomness. `argparse` related bug,
   Bug was discovered and fixed by @LogosOfJ, thanks a lot!
 - Fixed #29. Tell about code prefix problem in README.
+- Activated logging. Using `verbose` will result in additional output.
 
 
 0.9 (2016-09-14)

diceware/__init__.py

@@ -20,6 +20,7 @@ import pkg_resources
 import sys
 from random import SystemRandom
 from diceware.config import get_config_dict
+from diceware.logger import configure
 from diceware.wordlist import (
     WordList, get_wordlist_path, WORDLISTS_DIR, get_wordlist_names,
     )
@@ -204,6 +205,7 @@ def main(args=None):
     if args is None:
         args = sys.argv[1:]
     options = handle_options(args)
+    configure(options.verbose)
     if options.version:
         print_version()
         raise SystemExit(0)