0.5.4 to 0.5.5

* Support compressed FITS files for images and backgrounds.

0.5.3 to 0.5.4

* Add spooling of plot files to the printer or preview.

* Add support for Year-month-day date formats.

* Make the documentation PDF files clickable.

0.5.2 to 0.5.3

* Add location reporting on Ctrl-LMB or Shift-LMB in a paused image
  display.

0.5.1 to 0.5.2

* Fix autoscaling so it works when there are NaN's in the image.

* Add the ability to blink an image and its neighbour when in location
  marking mode.

* Rename RESTORE_SEQUENCE to SMEI_RESTORE

* Add a progressive median threshold cleaning routine, MCLEANER to utils.

0.5.0 to 0.5.1

* Two util functions GAUSS_REMOVE & GAUSS_CLEANER to remove small-scale
  features from images.

0.4.7 to 0.5.0

* Add system of background model subtraction.

0.4.6 to 0.4.7

* Fix a half-pixel error in image centres.

0.4.5 to 0.4.6

* Rationalize movie generation.

0.4.4 to 0.4.5

* Add options to kill data outside a specific range as being "bad
  values".

* Fix error that caused compound calculations to fail.

0.4.3 to 0.4.4

* Add smei_image::set_image to facilitate writing custom background
  routines etc.

0.4.2 to 0.4.3

* %median calculations operator

* Cleanup fits header handling a little.

0.4.1 to 0.4.2

* Last bit of the core suport for fisheyes (profiles)

* Support for AVI and Quicktime movies via "transcode"

0.4.0 to 0.4.1

* Improved Fisheye support (N.B. img_hdr.txt file format has changed).

* Cache file and descriptions list.

0.3.4 to 0.4.0

* Preliminary support for Fish Eye projections

0.3.3 to 0.3.4

* Add missing PLANE keyword to CLI SMEI_IMAGE_IMAGE

* Add new CLI routines, SMEI_IMAGE_INFO and SMEI_SEQ_INFO to return
  various useful information from an image or a whole sequence.

0.3.2 to 0.3.3

* Support plane selection in profiles

0.3.1 to 0.3.2
 
* Fix crash when no images found

* Add support for elementary profiles.

0.3.0 to 0.3.1

* Modify main menu to use tabs (if IDL >= 5.6)

* Add option to go straight from calc menu to the display menu

0.2.5 to 0.3.0

* Major rewite of the computations framework.

* Store last source directory in sequences.

* Fix identification of Hot Pixel flagging.

* Progress bar prettified.

0.2.4 to 0.2.5

* Modifications to allow the use of single-plane fits files.

0.2.3 to 0.2.4

* Add export of a sequence as a set of PNG files (to allow the user to
  encode to other movie formats).

* Fix problem where colour tables set via XLOADCT were not stored.

0.2.2 to 0.2.3

* Add support for running smei_calc programs directly on loading
  images.

0.2.1 to 0.2.2

* Change storage of FITS header to original string array (API unchanged)

* Add option to display FITS header of current image of a paused
  sequence.

* Improve PA/Elong plotting.

* Add labelled grids options

* Return celestial coordinates from locator.

* Zooming of main display, and a zoom tool added.

0.2.0 to 0.2.1

* Save the printing options.

* Rearrange to better fit into SSW

* Improve printing menu

* Make distinction between off-sky and missing data.

* Make progress bars be free-floating
				   
0.1.5 to 0.2.0

* Support for Elongation and Position Angle grids as well as latitude
  and longitude.

* Many bug fixes in the command line interface.

* Allow selection of display plane in printing options

* Scroll paused display with a mouse wheel.

* Allow FITS files to be in a directory tree rather than just a single
  flat directory.

* Add some useful image ops programs, and a sample SolarSoft init file.

Up to 0.1.5

* Many and various as it takes shape.