0.1.2

CHANGES:

• example app/mgit.exe: initialize the RNG and add an mtime repl command (!9 - @reynir, review by @hannesm)
• BUG FIX: make last_modified return the commit date when on a clean commit.
  This restores the behavior before v0.1.0 (!10 - @reynir, review by @hannesm, @dinosaure)