Merge branch 'develop' into release-0.19
Update minor version
Update configure script
Merge branch 'fix-if-pkgconfig-is-unavilable' into configure
Merge branch 'configure' into kmiya
Merge branch 'kmiya' into sandbox
Merge branch 'sandbox' into release-0.19
Bump version
Rebuild configure script
Merge branch 'release-0.19' into develop
Drop the preparation for SIMD enhancement
Drop unused posix_memalign stub function
Rebuild configure script
Merge branch 'develop' into configure
Cleanup
Merge branch 'configure' into sandbox
Issue #2 Fix segmentation faults caused when
libcurl integration is enabled
Update manpage of img2sixel
Fix a GDK error caused by loading image from stdin
with gdk-pixbuf
Fix segmentation errors when loading stdin with gdk-pixbuf