rwsh v0.3 is now available. As the Changelog says, there are more changes than would be worth enumerating.
rwsh v0.2 is now available. It includes the ability to source scripts, a configuration that is in its init script rather than hard-coded, support for conditionals and some signal handling.
The rest of the documentation for rwsh v0.1 has now been posted, so that when the README directs you to the website, there's actually something there. Imagine that.
I have now posted a proof of concept version of rwsh. It implements a current selection of files, internal functions and argument functions along with very basic shell functionality as these are the areas that I felt distinguished my ideas from what is already available. It does not currently support execution of scripts, file redirection, or pipes.