Merge branch 'master' into release
Merge branch 'master' into release
Merge branch 'master' into release
Merge branch 'master' into release-1.4
Fix a typo of API signature(#10). old one is still remained.
Merge branch 'develop' into release-1.4
Merge branch 'master' into release-1.4
Add tests for pipe-mode
Merge branch 'feature-pipe-mode' of github.com:saitoha/libsixel into feature-pipe-mode
Expand 8bpp grayscale input into 24bit colors if it is needed
Make palette from grayscaled PNG with -m option
Add some tests of loading grayscaled PNG
Merge branch 'develop' into feature-load-grayscaled-input
Merge branch 'feature-load-grayscaled-input' into release-1.4
Update NEWS
Update ChangeLog
Merge branch 'fix-typoed-api' into release-1.4

Conflicts:
	include/sixel.h.in
Update NEWS
Update libtool version to 1.3.0
Merge branch 'release-1.4' into develop