GraphicsMagick version support

[paazmaya]

Which version of GraphicsMagick is supported?
http://www.graphicsmagick.org/NEWS.html

Locally installed in Ubuntu: 1.3.23 2015-11-07 Q16

• Tests pass expected uniquecolors: '24529'

Travic CI Ubuntu: 1.3.12 2010-03-08 Q8

• Identify related tests fail due to getting false

AppVeyor Windows: 1.3.24 2016-05-30 Q16 (manually installed)

• Tests pass

So how to guarantee functional minimum version and what is its number?
Does it require some additional dependencies?

[paazmaya]

After putting Travis to use Trusty, the version 1.3.18 2013-03-10 Q8 appears, but with the same result of identify returning false.
https://travis-ci.org/paazmaya/image-duplicate-remover/jobs/150414504

[paazmaya]

Feature Support	Travis Trusty	AppVeyor Windows	Local Ubuntu
Thread Safe	yes	yes	yes
Large Files (> 32 bit)	yes	yes	yes
Large Memory (> 32 bit)	yes	yes	yes
BZIP	yes	yes	yes
DPS	no	no	no
FlashPix	no	no	no
FreeType	yes	yes	yes
Ghostscript (Library)	no	no	no
JBIG	yes	yes	yes
JPEG-2000	yes	yes	yes
JPEG	yes	yes	yes
Little CMS	yes	yes	yes
Loadable Modules	no	no	yes
OpenMP	yes (201107)	yes (201307)	yes (200203)
PNG	yes	yes	yes
TIFF	yes	yes	yes
TRIO	no	no	no
UMEM	no	no	no
WebP	-	yes	yes
WMF	yes	yes	yes
X11	yes	yes	no
XML	yes	yes	yes
ZLIB	yes	yes	yes

[paazmaya]

gm identify -format "%q %Q %b %h %k %w" "tests/fixtures/a/jukka-paasonen.jpg"

Local Ubuntu: 8 75 7.3Ki 200 24529 200

Travis: 8 %Q 7.3K 200 24529 200

AppVeyor: Q h w

[paazmaya]

http://www.graphicsmagick.org/NEWS.html#october-4-2015 1.3.22 (October 4, 2015)

• -format: %Q now reports JPEG quality estimate if it is available.

[paazmaya]

Removed the use of %Q in 00ee94b due to its being too new for default installations.
Also file size is collected via Node.js API rather than GM.