Changes from Mercurial (hg https://bitbucket.org/isa-afp/afp-devel/ default)
Summary
- re-instate devel changeset 6edffc003761
- reset version to devel after release fork
- version -> 2019
- update docs
- update entry release list
- HOL-CSP: update to Isabelle2019-RC2
- Multi_Party_Computation update for Isabelle2019-RC2
- merged from afp-2018
- sitegen for LambdaAuth
- new entry LambdaAuth
- website for Multi_Party_Computation
- new entry Multi_Party_Computation
- HOL-CSP website; new topic Computer Science/Semantics; email address for Wolff
- HOL-CSP (new)
- Backed out changeset a56916696df0 (already past Isabelle2019-RC2)