added "TPTP" theory with IsabelleP tactic, so that it is maintained alongside with Isabelle and that the CASC version of Isabelle is provided by Isabelle itself instead of being stored on the TPTP servers
Intro Ref System Logics HOL ZF Inductive TutorialI IsarOverview IsarRef IsarImplementation Locales LaTeXsugar Classes Codegen Functions Nitpick Main Sledgehammer