Add missing #include <cstdlib> (needed for malloc and free)
saveto() method handles also gzipped FITS files.

The saveto() method now also checks whether a file with the .gz suffix exists.
Update release information
Update copyright time span.
Remove some obsolete documents from release script.
Bring develop branch ahead of master branch after code release.
Remove blank line (for testing)
Add missing hyphens.
Add run ids to XML file on output (bug #1092)