Hey! Developer here. The OP posted the link to the direct blog post - simply click on "App" in the header or go to
https://flumeapp.com to see the regular website. The website is currently being redesigned, but the App Store description on the MAS covers most of the details. There was a link missing in the blog post to link to the App Store, which I've just re-added.
As for the changelog - that's deliberately verbose. Most developers hide behind a vague "bug fixes and improvements" message with their release notes, or release multiple updates in a few days / weeks of each other because they either fix less things at once or want to hide embarrassing or crucial errors from further scrutiny. We opt for the opposite approach and to let people know exactly what's changed, and our updates are often months apart encompassing hundreds of changes at once.