Merge branch 'master' into release-1.3
Merge branch 'develop' into release-1.3
Update version
Update ChangeLog
Add missing options in brevity help
Avoid scanf buffer overflow
Interpret an image expanded by png_set_palette_to_rgb as a 3-channel image
Merge branch 'develop' into release-1.3
Merge branch 'hotfix-for-paletted-png' into release-1.3
Bump version
Merge branch 'release-1.3'
Enable some options(-f, -s, and -q) ignored unintentionally
Merge branch 'master' into release-1.3
Merge branch 'hotfix-for-disabled-options' into release-1.3
Update version
Build fix for some system which don't provide clock or usleep
Merge branch 'release-1.3'
Kill bashizm

'=' operator for test(1) is not portable.
Fix segfault on using gdk-pixbuf loader with -m option
Merge branch 'hotfix-segfault-gdk-pixbuf-with-mapfile-option' into release-1.3