Below are all of the changes for each version of the gtag extension. You can see your installed version at the bottom of every gtag page (extension configuration or actions), as well as the Extensions tab in the Launch interface.
You are no longer limited to just non-negative integers in event values - values can now be floats and will be converted as such. Some tools (GA) will only accept integers, so those values will be rounded.
If you attempt to pre-load the library multiple times, you'll now receive a notice in the console that you've already loaded the library. This was previously in place but was never executed.
The initial release of the gtag extension!