Gnuastro 0.3

GNU Astronomy Utilities 0.2

This marks the second public release of Gnuastro. The full list of changes
can be seen in the `NEWS' file, but the most important added features are:

 - Gnuastro library: for using the building blocks of Gnuastro's programs
   in other C and C++ programs. Python wrappers will also be coming with
   the next releases. In this 0.2 release (first library release), the main
   emphasis was on having a robust library build, management, and
   documentation infra-structure. A lot of work still remains on improving
   the functions: for example they abort on an error. Most of the
   interesting functions are also still locked up in the programs. But with
   this infra-structure in place, the next releases will greatly improve
   the quantity and quality of the offered library functions.

 - A new program to read and write FITS binary and ASCII tables called
   `Table' with the executable name `asttable'. It can also show the column
   information of a FITS table, or select columns with regular expressions
   on their title.

GNU Astronomy Utilities 0.1

This is the first official release of Gnuastro. The software
infra-structure has been converted into a very robust system to easily
accomodate future extensions. Work is also ongoing for the libraries to
become installable in the 0.2 release.

GNU Astronomy Utilities 0.0

This is a pre-release version of GNU Astronomy Utilities (Gnuastro). It is
versioned based on the reproduction pipeline of the first paper that
defined the Gnuastro (Akhlaghi and Ichikawa, ApJS 220, 1. 2015). The
reproduction pipeline has been submitted with the paper to arXiv
(1505.01664) and is also present on Gitlab:

    https://gitlab.com/makhlaghi/NoiseChisel-paper/

This version will also be available in the tar.gz download page of Gnuastro
for users who would want to reproduce those results. The fact that this
version number was tied to the publication of that paper was only necessary
for that first paper. Subsequent papers will use the released version
numbers.

About the tag format:
---------------------

The main Gnuastro repository is hosted on Savannah using "cgit". cgit has a
download link on the summary page. It will provide a .tar.gz tarball by
suffixing the package name with the tag. So when the tag is in the format
of X.X, or vX.X, then the tarball will be named `gnuastro-0.0.tar.gz'. This
is the same tarball name from the FTP server. On the FTP server, the source
code is bootstrapped and ready for configuration. But the tarball produced
by cgit only contains the version controlled files. So having the same name
can cause confusion.

To avoid this problem, we have specified the tag format of
`gnuastro_vX.X'. With this format, cgit's automatic tarball name generation
apparently fails and so it just appends a `.tar.gz' to the tag name. So the
final result will be `gnuastro_v0.0.tar.gz'. This is sufficiently different
from the FTP format while also being clear in case (for some reason)
someone wants to download cgit's tar.gz. And most importantly it will not
cause any confusion.