issue #200 introduce map-altering events (part 1) add new locations.
clear mission description from crash event to hide timer starting (issue #200). SAtart work on issue #201 (time not tracked on saved missions)
issue #204 migrate missions to use attributes. add "event" mission type.
regenerate mission data after code changes
don't build description in missions if null
issue #203 part 1: use "saveAttributes" (a variant on "currentAttributes" to serialise creature data.  (need to do the same for artefacts
correct attribute capitalisation
issue #203 part 2 - artefact attributes save as current attributes
bugfix fomr "hit" rework - genderPrefix not a local variable (needed function call)
minor wording bugfix
bug fix - should not be able to hit a friendly creature when armed!