Added Vector Image ObjectModel and one DataFormat (Expression Blend) (incomplete)
Improved file table parsing in ISO format; still a lot of work to be done
Added sanity check for header magic string
Documented previously unknown fields and implemented actual ability to access files in the file system
More accurately align the Reader to the 2-byte boundary
Support unspecified DateTime values for DECDateTime
Added inline documentation for recordLength field
Improvements to ISO data format