Starlink-pyast

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- A bug has been fixed which could cause an incorrect axis to be used when
accessing axis attributes within CmpFrames. This could happen if axes
within the CmpFrame have been permuted.

- A bug has been fixed in the SkyFrame class that could cause the two
values of the SkyRef and/or SkyRefP attributes to be reversed.

- Bugs have been fixed in the CmpRegion class that should allow the border
around a compound Region to be plotted more quickly, and more accurately.
Previously, component Regions nested deeply inside a CmpRegion may have
been completely or partially ignored.

- A bug has been fixed in the Plot3D class that caused a segmentation
violation if the MinTick attribute was set to zero.

- The astResampleX set of methods now includes astResampleK and
astResampleUK that handles 64 bit integer data.

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- The libast_pal library is no longer built if the "--with-external_pal"
option is used when AST is configured.

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- The levmar and wcslib code distributed within AST is now stored in the
main AST library (libast.so) rather than in separate libraries.

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- Fundamental positional astronomy calculations are now performed
using the IAU SOFA library where possible, and the Starlink PAL library
otherwise (the PAL library contains a subset of the Fortran Starlink SLALIB
library re-written in C). Copies of these libraries are bundled with AST
and so do not need to be obtained or built separately, although external
copies of SOFA and PAL can be used if necessary by including the
"--with-external_pal" option when configuring AST.

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- The Spitzer "-SIP" distortion code is now recognised within FITS
headers that describe non-celestial axes, as well as celestial axes.

- A bug has been fixed that could cause inappropriate equinox values to
be used when aligning SkyFrames if the AlignSystem attribute is set.

- The format of the version string for AST has changed from
"<major>.<minor>-<release>" to "<major>.<minor>.<release>".

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- This version of AST is the first that can be used with the Python
AST wrapper module, starlink.Ast, available at http://github.com/timj/starlink-pyast.

- When reading a FITS-WCS header, the FitsChan class now recognises the
non-standard "TPV" projection code within a CTYPE keyword value. This
code is used by SCAMP (see www.astromatic.net/software/scamp) to
represent a distorted TAN projection.

- The Plot class has been changed to remove visual anomalies (such as
incorrectly rotated numerical axis labels) if the graphics coordinates have
unequal scales on the X and Y axes.

- The graphics escape sequences used to produce graphical sky axis labels
can now be changed using the new function astTuneC (AST_TUNEC).