Reversed for Patch 1.6, aka "Adams". (no functional changes)

Updated for Patch 1.7, aka "Bradbury".

Updated for Patch 1.6, aka "Adams".

Updated for Patch 1.5, aka "Banks".

The Shroud isn't handled as crisis. He can appear independently even without the mod and won't interfere with it in any way.

No idea what I did here. xD

Updated for Patch 1.4, aka "Kennedy".

Updated for Patch 1.3, aka "Heinlein".

The new leviathans aren't handled as crisis. They can appear independently even without the mod and won't interfere with it in any way.

The new "War in Heaven" event is also special as it can't trigger when the "Guardians of the Galaxy" event has happened. Because this can happen each time a crisis triggers depending on the types of fallen empires involved multiple crisis can lower the chance for a "War in Heaven".
For the up to date chances search for "Guardians of the Galaxy" on the Crisis page in the wiki.
http://www.stellariswiki.com/Crisis

Hotfix

Updated for 1.2, aka "Asimov".

Updated for 1.1, aka "Clarke".