1.44-a4

	- Changed 'detect' behaviour to comply with built-in corrections.

	- FLUX_CORRECTING_FWHM key and -correct= flag introduced for crush
	itself controlling the flux correction during the reduction itself.
	Argument is either FWHM source size in arcsec or 'point' for point 
	sources, else 'none' if no correction is desired.

	- Took account of the effect of field rotation on the flux correction.
	RowPolynomials and MUXOffsets are now better corrected. This will not
	affect single scans really. Only sets of scans reduced together will
	have different correction factors from the prior test version.

	- Improved the way position angle range is calculated for a set of 
	scans. This is mainly used for deciding whether row or mux models are
	allowed to precede source under 'auto' activation rules for extended
	sources. Also, source diameter (or beam size) is taken into account
	in making that decision for more robust default functionality.

1.44-a3

	- Image FITS headers are now fully preseved under imagetool.

	- An error was found with the Regional Correlation correction, both
	in the way it was calculated and then applied. Both have been fixed.
	Only affected corrections on -deep reductions.

	- Problem from previous version with applying correction (leaving blank
	images) is now fixed.

1.44-a2

	- Applied Smoothing now appears on image info.
	
	- Further improved flux corrections. Corrections are calculated more
	exactly, and scans that are not contributing to maps are ignored.
	The source size (FWHM) for which fluxes are corrected for is recorded
	under the 'CORRECTN' FITS key in the image.
	The flux correction is also printed with the image info whenever
	images are opened with the crush utilities.
	Corrections can be applied multiple times via the crush utilities, 
	with the new correction overriding the previous.

	- Point flux corrections will be taken into account for -compact
	reductions to produce better composite maps. However, the output
	will remain an essentially uncorrected image, i.e. corrections
	are to be applied as usual, e.g. via imagetool or calibrate.

1.44-a1	

	- In an effort to aid calibration corrections, correction factors
	calculated for flux filtering models are now stored in the FITS
	output image for point sources. These numbers can be used to estimate
	the correction factor for any size source.

	- 'calibrate' updated to automatically apply the necessary source 
	flux corrections for calibration sources.

	- 'imagetool' new option -correct= added to apply flux corrections
	to the specified source size. The argument is either a FWHM in 
	arcsec, or "point" for point source corrections.

	- 'calibrate' headers updated. Behaviour on non Alt/Az images was
	also improved (FAZO and FZAO fields have strike-out entries.)

