reinsert old Peek.c
Merge branch 'master' of github.com:jensgerlach/validation
clarify assigns in named behavior
Merge branch 'master' of https://github.com/jensgerlach/validation
fix remaining comments from  Jochen
minor modification in peek and poke
Merge branch 'master' of github.com:jensgerlach/validation
Merge pull request #217 from jensgerlach/master

continue internal review