Tig version 2.1 is now available the usual places. The main focus of this release has been to address the performance regressions when using Tig in large repositories. For example, it is now possible to use the old and faster graph renderer and to configure Tig to not automatically use topological order when rendering the graph. See https://github.com/jonas/tig/blob/master/contrib/large-repo.tigrc for a list of settings to speed up Tig in large repositories.
Since the last release the test suite has grown to 209 assertions in 74 tests, where "assertions" generally corresponds to file content comparisons. While there are still many things without tests, it now has a more acceptable coverage with hit/total/coverage (as reported by lcov) being:
Lines: 7145 9435 75.7 %
Functions: 602 668 90.1 %
As for what else is in the release, please see the post's link or http://jonas.nitro.dk/tig/NEWS.html#_tig_2_1 for the full list of improvements and bug fixes.
In other news, there is now a Gitter chat room here https://gitter.im/jonas/tig if you want to discuss something.
Finally, the repo is quickly approaching it's 2000th commit, so I will have to think of something awesome to land when that happens ...