Update ZVM: now uses an extensible formatter system
Update StructIO to handle ZVM formatting changes
Fixed bug in ZVM for @print_table
Fix bug which was causing an infinite loop in Planetfall.
Fix #16 - Inform 7 games couldn't restored
IE11 now has overrideMimeType() support, but seemingly not for the x-user-defined charset. So I brought across the windows-1252 implementation from the Library branch. I should probably clean up some of this code more...