This is still on the radar. Just been a bit busy working on getting my local maker space ready to open. Have not had a chance to dig in to why it's having trouble.
I did play with that other library but it seems to want constants for the the parameter of what you want to extract from the json query.
It should get there. Just no eta as of now.
Also I need to get every thing moved to the new staging version of the arduino environment. So there is a bit of work to do there. I'm also looking to move the documentation to the git hub and have a separate file for each command so that example can be included. There is so much to do. It will get there. Slow and steady wins the race.
http://esp8266basic.com
A BASIC interpreter for your ESP
Working now on Autodrop3d. A 3d printer with automatic part ejection system. https://autodrop3d.com