Starlink-pyast

---------------------------

- Support for time coordinate systems has been introduced throught the
addition of two new classes, TimeFrame and TimeMap. The TimeFrame is a
1-dimensional Frame which can be used to describe moments in time (either
absolute or relative) in various systems (MJD, Julian Epoch, etc.) and
referred to various time scales (TAI, UTC, UT1, GMST, etc). The TimeMap
is a Mapping which can transform time values between these various
systems and time scales.

---------------------------

- If the Format attribute associated with an axis of a SkyFrame starts
with a percent character (%), then axis values are now formatted and
unformatted as a decimal radians value, using the Format syntax of a
simple Frame.

- The Plot class has a new attribute called Clip which controls the
clipping performed by AST at the plot boundary.

- The PolyMap class has been modified to allow a PolyMap to be written
succesfully to a FitsChan using Native encoding.

- A mimimal cut down subset of the C version of SLALIB is now included
with the AST distribution and built as part of building AST. This means
that it is no longer necessary to have SLALIB installed separately at
your site. The SLALIB code included with AST is distrubuted under the
GPL. The default behaviour of the ast_link script is now to link with
this internal slalib subset. However, the ``-csla'' option can still be
used to force linking with an external full C SLALIB library. A new
option ``-fsla'' has been introduced which forces linking with the
external full Fortran SLALIB library.

---------------------------

- AST now provides facilities for representing regions of various
shapes within a coordinate system. The Region class provides general
facilities which are independent of the specific shape of region being
used. Various sub-classes of Region are also now available which provide
means of creating Regions of specific shape. Facilities provided by the
Region class include testing points to see if they are inside the
Region, testing two Regions for overlap, transforming Regions from one
coordinate system to another, etc.

- A new class of 1-dimensional Frame called FluxFrame has been added which
can be used to describe various systems for describing ovserved value at a
single fixed spectral position.

- A new class of 2-dimensional Frame called SpecFluxFrame has been added which
can be used to describe a 2-d frame spanned by a spectral position axis
and and an observed value axis.

- A new class of Mapping called RateMap has been added. A RateMap encapsulates
a previously created Mapping. The inputs of the RateMap correspond to the
inputs of the encapsulated Mapping. All RateMaps have just a single
output which correspond to the rate of change of a specified output of
the encapsulated Mapping with respect to a specified input.

- The SkyFrame class now supports a value of "J2000" for System. This
system is an equatorial system based on the mean dynamical equator and
equinox at J2000, and differs slightly from an FK5(J2000) system.

- Methods have been added to the FitsChan class to allow values for named
keywords to be changed or added.

- The parameter list for the astRate method of the Mapping class has been
modified. It no longer returns a second derivative estimate. Existing
code which uses the astRate (AST_RATE) method will need to be changed.



chmod +x ./getnewversion
./getnewversion

AST_VERSION="`cat ./version.number`"
export AST_VERSION

echo "AST_VERSION $AST_VERSION"

PATH="$PWD:$PATH"
export PATH

AST_DEV=$PWD
export AST_DEV

AST_REF=$PWD
export AST_REF

PKG="ast"
export PKG

PKG_REF=$PWD
export PKG_REF

PKG_DIR=$PWD
export PKG_DIR

PROJECTDIR=$PWD
export PROJECTDIR

MAKEFILE="$PWD/grp-ref.make"
export MAKEFILE

EXPORT="$HOME"
export EXPORT

(
rmk release
) 2>&1 | tee ~/ast_release.log