Status update - 2.9 is still WIP, I want to focus on more interface improvements and graphical changes that will make it much easier to add some often requested features (like making screenshot of the entire map in desired scale). Edit mode for isometric view will likely appear later due to engine lacking several important features that would make isometric editing "feel right" (mostly raytracing - thing that allows you to select any 3d object/creature in Wurm world, DeedPlanner currently uses much simpler technique that only really works good for 2d), but view mode for it is already done and will appear in 2.9 as experimental feature.
When it comes to analytics, user count is very stable since 2 months at these numbers:
400 users per month
160 users per week
55 users per day
One statistic surprised me more than others - I always thought DeedPlanner is used occasionally mostly when someone needs to plan a new deed (that's my personal use case). It turns out that over half of the users use it regularly (at least once per two weeks).
I decided to publish donation stats for transparency and added extra section in OP about them.
If you made a donation and would like to see yourself listened here (by default only "donations per year" gets updated), please send me a private message. This applies to both old and new donations as long as I can verify them (up to exactly 3 years in a past).
Donations per year (since March 2015):
2018 - 0€
2017 - 71€
2016 - 30€
2015 - 25€