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.
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Autodesk has made several UV improvements and added some new modeling tool updates and promised that your workflow would be faster then never before. Here’s just a couple of new features of Maya LT 2018.
Revamped the UV editor will simplify the UI. A new intelligent stacking feature lets you stack similar UV shells, automatically redistribute UVs for even spacing, and constrain the movement of UVs along edges so you can spend less time on UV work.
The viewport in Maya LT 2018 introduces transparent shadows that cast accurate 1-bit shadows and ambient occlusion (SSAO) through cards with transparent texture maps, so you can see your viewport shadows in scenes. Also was made several bug fixes including performance improvements.
Maya LT’s modern Time Editor featuring features a new workflow for defining custom root(s) for relocator objects allowing for better control over offsetting of clips. Also, Time Editor clips can now be looped progressively, so that cycles project forward.