-mpti / --max-plugin-target-instances can be used to control the number of instances of a plugin that can run concurrently per target.
-mpgi / --max-plugin-global-instances can be used to control the number of instances of a plugin that can run concurrently (globally).
Plugins can now call info(), warn(), and error() functions from their service / target object which will properly prefix the plugin name, etc.
A new subdomain enumeration plugin using gobuster has been developed.
Moved http.py to http_server.py to avoid import clashes with Python's http library.
Report plugins can take a list of targets and create reports based on the scans and files.