Congratulations!!
This is a very old dream come true. Though I had already the 0.9.8. ArchLinux version (collector edition), I uninstalled it to try the installer as root after reading the documentation...
It installed very easily.
After that, I could launch it directly using the terminal. I did not see the icon in the menu but it did appear in "Office" after rebooting (Restarting Cinnamon session would have been enough, I guess).
I have still to write the link to my old plugins directory, and switch to French GUI and EPUB3.
It was built with Qt 5.6.2.
Again. A huge thanks!!!