* using Plugin.GenServer now uses Plugin.Base so that is not required
* Remove Omnibot.Plugin because all it did was include Plugin.GenServer
and Plugin.Base
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
Being able to handle arbitrary messages from other processes is a
generally useful thing to have for fine-grained control of the plugin.
Agents don't provide that, while GenServers do. I've removed all
instances of the Agent and replaced it with the GenServer and everything
appears fine so far.
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
