Villager Enhanced

Fixes from actually playing it.

Fixed

• Villager births were never announced. The birth half of 0.8.0's notifications did not work at all — it listened for an event that Minecraft does not raise for villagers. Breeding a pair now announces the child properly. Walking into a village that already contains children stays quiet, as it should.
• Several settings could not be changed. Voice volume and conversation range were decimal values shown as text boxes that refuse a decimal point, so they could only be set to whole numbers — voice volume was effectively off or full. Every numeric setting is now a slider.
• Villagers with no profession wandered off mid-conversation while everyone else stood and listened, and two players could talk to the same one at once. Both fixed; unemployed villagers now behave like the rest.

Changed

• Asking a villager's name now gets you an introduction. They tell you their name and greet you properly, rather than the window title quietly changing while they say "Hello" as though nothing had happened.
• Dialogue is paced more slowly by default — three quarters of a second per line rather than a quarter. Adjustable as before, including off.

Notes

• Voice volume and conversation range reset to their defaults when you update, because both changed form. Re-set them if you had tuned them.
• The notification radius maximum is now 256 rather than 512. Villagers beyond simulation distance are not running, so nothing happens out there to hear about.
• No protocol change; 0.8.1 talks to 0.8.0 clients and servers.