Add a PtypBinary property and unify PidTagBody/PidTagHtml
Use PidTagMid for PidTagInstId
Set the PidTagHiddenAttribute to False for the message
Fix the name of the property responsible for retrieve the number of unread messages
Add a sample PidtagChangeKey property and value
Fix fmid overflow in sample backend. PT_I8 is using LONGLONG and we were assigning ULONGLONG
Add PidTagMessageStatus and PidTagMessageFlags to sample backend
Add support for PT_SYSTIME in Python-C gateway (float timestamp in Python)
Add delivery date and last modification time property to sample message