Wish it credited Light Table as inspiration (http://lighttable.com/) :/
Even the term "instarepl" is taken from LT's creator, Chris Granger.
Of course LT's inspiration is Smalltalk's IDE.
Everything is a remix ;) Light table certainly was my inspiration for the instaREPL. DrRacket inspired the notion of running code in the same process as the editor. The code completion system comes straight from CIDER. I could go on and on. Please don't interpret the lack of a mention as a slight. We're all remixing each others' work.
"Of course ..." is that really true though? From the very beginning, the very first demo, Chris Granger mentions that he got inspired by Bret Victor's Inventing on Principle demo. He mentions it in the first blog post as well :p No mentions of smalltalk
