Having looked at it, I think going with 4.x was definitely the right choice - having to change the TCPIP library over looks like a reasonable chunk of work, but it looks like all the changes for 4.x are things that would have to change for 5.x anyway.
I reckon if we can get something building and working with 4.x then moving up to 5.x from there should be a little easier.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Ok, great!
Having looked at it, I think going with 4.x was definitely the right choice - having to change the TCPIP library over looks like a reasonable chunk of work, but it looks like all the changes for 4.x are things that would have to change for 5.x anyway.
I reckon if we can get something building and working with 4.x then moving up to 5.x from there should be a little easier.