imports from libregamewiki, conversions cvs to git, correcting keywords and code dependencies

entries/sleep_is_death.md

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+# Sleep Is Death
+
+_Aka Geisterfahrer is a two-player RPG game._
+
+- Home: http://sleepisdeath.net
+- State: mature, inactive since 2018
+- Keywords: role playing, multiplayer, open content
+- Code repository: https://github.com/jasonrohrer/SleepIsDeath.git
+- Code language: C++
+- Code license: ? (Public domain)
+- Code dependencies: SDL
+- Assets license: ? (Public domain)
+
+Developer: Jason Rohrer
+
+## Building
+
+- Build system: Make