Runscript 1.3.0 Release Candidate 2

Default positionals!

Adding $opt default_positionals to a runscript allows run to pass args which point to nonexistent targets to the default target instead, making it work more like a shell script. My recommendation is not to put it on everything, but only the scripts that need it.

The help message is now more helpful as well

The attached binaries are not installers!
Simply decompress them, and they (should) work. Put them on your $PATH if you want.

As seems to be usual, there's a linker error preventing me from creating a windows build.