This release fixes some bugs regarding the "help"
command executor, the "working_url" parameter
type, and the "DefaultParameterTypes" set. It also
solves other minor bugs.
This release allows one to use a variable number
of parameter values for the last one. This means
it's possible to define command lines with a
string such as "send to <email> files
<file> ...", allowing one to execute command
lines like "$acme send to pau@someplace.net files
a.txt b.txt c.txt".