Version 2.1.10 is now out. This is a bugfix release with no new features.
The most important change in this version is reduced memory consumption. An error in 2.1.8 ended up causing excessive memory use when joining a large session, which could cause the application to crash when it ran out of memory, especially when using the 32 bit version. This release should fix that and allow the other changes that were added in that version to work properly, leading to even smaller memory footprint than the previous version.
Bugs fixed in 2.1.10: