KevinH has been hard at work with keeping Sigil alive. So much so that we're gearing up for a new major (0.8.0 release). Oh and so I don't forget DiapDealer has been helping out too.
Right now we need testing and feedback on the major new feature we've implemented... The official plugin system!
So far we have the base concept in place but we need feedback about the design and system. The idea is you can do input, output, and edit operations via plugins written in a variety of scripting languages. Right now Python 2.7 is supported. Lua 5.2 has preliminary support in Sigil but it's not complete yet. Python 3 is planned before 0.8.0.
Packages are available
removed. They're not on Google Code because new downloads are disabled. Since this is an alpha I don't want to put them on GitHub. When 0.8.0 is released it will be on GitHub.
I'll let KevinH provide more details.