The following describes the most significant changes which
occurred in the AST library between versions V7.0.5 and V7.0.6:
- A bug has been fixed in astRebinSeq<X> which could result in
incorrect normalisation of the final binned data and variance values.
- When reading a FrameSetFrameSet from a FITS-DSS header, the keywords CNPIX1
and CNPIX2 now default to zero if absent. Previously an error was reported.