Patron Exclusives
GSE exists because of its Patron's support. To say thank you the following quality of life improvements are part of the GSE Patron Build available from the GSE Discord. GSE will run without these, they just make things easier. To become a GSE Patron visit https://patreon.com/TimothyLuke
Opening sequences in a new window can be achieved for Patrons by hitting the Sequences button multiple times.
You can also also right click a sequence and choose to open in a new window.
When editing the same sequence in two different windows, when you hit save in one window the other window leaves a note that it is now out of date. 
GSE Patrons can combine a collection of these to export a group of things as one import.
Pressing the Tab key on the Spell or Macro box will popup known spells and known variables.
Originally a debugging tool, Raw Edit is one of those quality of life features that is available for Patrons.
There is a lot of change to sequences between GSE 3.1 and 3.2. The upgrade and installation process will try to convert what is in your GSE.lua file but importing old sequences will be part of the Patron Exclusives after that. Part of this is as a thank you. The other is that if something goes wrong, Patrons have extra avenues for support.
With GSE 3.2.15 the ability for Patrons to specify an icon for an action was added.(https://github.com/TimothyLuke/GSE-Advanced-Macro-Compiler/issues/1621)
The 3.1 GSE build has a mode where a GSE 2 sequence can be imported and new GSE 2 sequences can be written and converted to GSE 3.
Originally a debugging tool, Raw Edit is one of those quality of life features that is available for Patrons.