Draw In Books

First stable release.

• Now licensed under the LGPL-3.0 instead of MIT. Modifications to this mod have to stay free software and publish their source; anything that merely depends on it, including a closed-source mod, or a modpack, is unaffected. Both jars ship the license texts inside them.
• The Paper plugin moves to 1.0.0 alongside the mod. No code changes.
• Documentation brought in line with what the mod actually does.