Alt click on a node connection automatically disconnect it from the other nodes. And there is some nodes which can be easily summoned by pressing a key and clicking at the same time. Like B+click will place a branch, and S+click a sequence.
If you're willing to compile it, Aseprite is a great option as well.
check my website for the latest tips - always updating with new content!
EGX Rezzed 2014 Event Montage
This a montage of games a YouTube user heychrissa checked out during EGX Rezzed 2014 event. She points out that this year the expo is even bigger than in 2013 and praises the scariness of the Alien: Isolation videogame demo,