Source: http://www.aperturephotometry.org/aptool/category/apt-updates/page/2/
Timestamp: 2019-04-19 02:35:36+00:00

Document:
Aperture Photometry Tool, v. 2.7.1, Available Now!
Improvement to function that exports photometry data to a CSV file: Write a hash character (#) at beginning of lines for preferences and header keyword/value pairs, in order to signal file parsers ignore them as comment lines.
Speeded up the function that exports photometry data to a CSV file, and also substantially reduced its memory requirements.
Added capability of setting up APT preferences to automatically generate a CSV photometry file with time tags from a FITS-header keyword, such as OBSMJD, when executing source-list processing in the batch mode. Thanks to Dr. Giuseppe Leto of the INAF – Osservatorio Astrofisico di Catania for this suggestion.
Aperture Photometry Tool, v. 2.7.0, Available Now!
Changed the default blank and saturated pixel colors for the cubehelix color table to the same used for the gray-scale image display (bright blue and bright red, respectively).
Did restructuring of the PixelAttributes classes for efficiency, consistency, and readability.
Modified the code to allow fpack-compressed FITS files with multiple image extensions to be read in as comparator images. (The fpack-compressed FITS files have the .fz extension at the end of the filename.) Thanks to Sarah Eve Roberts for raising this issue.
Aperture Photometry Tool, v. 2.6.9, Available Now!
Fixed the code that auto-detects a header line in the source list, which was not working because of a subsequent switch to a different token-reader function that does not generate an InputMismatchException where the auto-detection was previously handled.
Aperture Photometry Tool, v. 2.6.8, Available Now!
Upgraded the software to handle images with CTYPE1 = ‘RA—TPV’ and CTYPE2 = ‘DEC–TPV’ specified for the world-coordinate system.
Aperture Photometry Tool, v. 2.6.7, Available Now!
After discussions with Dave Shupe, who now believes the linear and constant terms of the SIP distortion are indeed necessary, modified the code to use them. For images where this is important, APT now computes positions that more closely match DS9 when the WCS requires SIP-distortion corrections.
Aperture Photometry Tool, v. 2.6.3, Available Now!
Aperture Photometry Tool, v. 2.6.2, Available Now!
Modified the software to read in fpack-compressed FITS files directly, for images having a wider variety of BITPIX values. Only the first image extension is handled in this version (handling mulitple image extensions is deferred to a later version).

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