Added advinventory.cpp - snapshot 2
Added advinventory.cpp - snapshot 3
Added advinventory.cpp - snapshot 4
Added advinventory.cpp - snapshot 5
Added advinventory.cpp - snapshot 6
Added advinventory.cpp - snapshot 7
Added advinventory.cpp - snapshot 8
Added advinventory.cpp - snapshot 9
Added advinventory.cpp - snapshot 10
Added advinventory.cpp - snapshot 11
Added advinventory.cpp - snapshot 12 - CURRENT VERSION