For example, I created a script, set version to "Alpha-v1".
In the next update, I changed version number to "Alpha-v2", and received the following message:
"You updated the code but didn't increase the @version
number. This means anyone who previously installed your script may not get the updated code. Save anyway?"Example Script
I can still update the script however, just find it annoy to tick the "Save anyway" box every time
IMO, it should just compare the extracted "version string (without any white-spaces)" to previous version.