And the cycle of experimental versions starts again 
And as usual, experimental versions need your feedback to improve themselves.
The installer is available [s]here[/s] - Link removed, -> version 0.8.9.
The most important things in this version :
1. Observational references
I'm happy to introduce this feature, it will be found under menu Image > Observational references.
This adds support for arbitrarily complex shapes, that can act as a "motion guide" during the video (see snapshot below). I have created a separate thread to better discuss this feature.
2. Update to FFMpeg
Kinovea now use a much more recent FFMpeg (more precisely libav), the underlying formats and codecs library, providing better support for several video formats.
This has triggered a number of changes in the low level code, so please check with as much files as possible and report the issues.
There were also several smaller improvements, for example in the spreadsheet export (sample in XHTML) and the granularity of the Overview feature can now be controlled directly by mouse scroll.
And for those tracking specific issues, the following bugs were fixed : m164, m165, m184, m185, m188, m189, m192, m194, m195.
Snapshot : Observational references at work.