1.45

	- A new feature allows to establish local CRUSH configurations (e.g.
        data and output paths, tau source settings etc.). After parsing
        crush.cfg from inside the crush directory, CRUSH will attempt to parse
        .crush from the user's home directory.

        - CRUSH now now gets online announcements that will help you to keep
        up to date with developments etc. This provides a simple channel to
        communicate important changes to the users.

        - CRUSH now checks online for the availability of new versions/updates
        when it is possible, and will notify the user on the console if
        new releases are ready for download. This check is performed whenever
        one of the crush tools is invoked.
	
	 - Preliminary solution now applies map smoothing and clipping as
	desired for final maps. This should improve SourceMap placement
	in the pipeline.

	- Added -offset= option to imagetool, allowing the re-levelling of
        maps. The offset is specified in the current FITS units. Use the
        -unit= option prior to -offset to change to your choice of units.

	- Updated configuration settings.
	
	- Moved PixelDrifts to after SourceMap in default pipeline.

	- Introduced sanity check for PixelDrifts placement. PixelDrifts
	is the most versatile of models, trumping all other models over
	its own timescale. Therefore it is important that it never precedes
	other, more crucial models, such as CorrelatedNoise, which 
	used for gain determination. Hence it will always be placed after
	CorrelatedNoise and PixelGains. The result should be more robust
	behaviour.

	- Bright configuration was mistakenly invoked when the SourceMap
	was disabled (e.g. -Imap=off option). Fixed.

	- [Cleaned-up some of the PixelDrifts code...]

	- Fixed parameter accounting and sky-polynomial source correction.

	- MAP_BEAM in FITS now correctly indicates effective map beam size.
	
        - Some truly small corrections to parameter accounting.

        - Pixel Drift Maximum-Likelihood Estimators had some gain issues...

        - 'imagetool -help' no longer produces an error.

        - Another small error with MUX variance calculations found and fixed.

        - Simplified SkyPolynomial correction bias calculation.



1.45-b2

	- [Previous 1.45 releases still had MUX variance bug.]

        - [Cleaned up unneccessary robust estimation code -- inherited from
        1.50...]

1.45-b1

	- Beam size was not read back by ReducedData, defaulting to 8.5 arcsec
	size at all times.

	- Better reductions on a larger range of sources rsulting from new 
	stricter chi^2 requirements for despiking and temporal pixel analysis.	

	- Crush -correct= (FLUX_CORRECTING_FWHM) still misbehaved if
	'none' was argumented. Now fixed. 

1.45-a1

	- Added alternative model for row drifts. RowBiasDrifts can be used
        instead of RowPolynomials. The new model is based on the assumption
        that the drifts are caused by slight fluctuations in the bias voltages
        to rows. Accordingly, the gains by which these couple to pixel readout
        are different than what is assumed in the Polynomial model (which
        essentially assumes that row drifts are temperature fluctuations.).
	This model is controlled, in the usual way, by the keys ROW_DRIFT_TURN
	and ROW_DRIFT_T and the corresponding -IrowDrift= and -rowDriftT 
	options.

