This has the funny effect of posts getting harder to write as time goes on; we have less releases with big, important features, and more releases with "tons of bugfixes and some minor improvements."
Possibly write about the reasons something was changed and the use cases improved, instead of the changes themselves?
I do try to write about the reasons why and use-cases improved. One of the issues is that that increases the amount of text, which directly goes against the idea of quickly finding what you want.
At the end of the day, if you want to know everything, you have to read everything. There's no shortcuts. I try to highlight the best things that the most people will want to know about, but if you really want to know everything, there's no better way than going straight to the source, like I do to create the post in the first place.
Regardless, I don't think the cost/benefit is right here; the posts and notes are already pretty short, and should only take a few minutes to read, even if you read all of them.