Correct unsigned to signed comparison.

Correct error corrections.

Correct not fully initialized variable.

Added -Wextra CFLAG. Fixed issues that arose from turning that flag on.

Add files to package.xml. Tweak download location.

Add PHP 7.3 to travis. Const a const variable.

Added debug for finding out why cached compiled IM is not kicking in.

Use correct flag for specifying download filename.

Use official releases, rather than Launchpad.

Added new constants.

COMPOSITE_STEREO
STYLE_BOLD
COLORSPACE_LINEARGRAY
RESOURCETYPE_LISTLENGTH

Only use PHP7 definition in PHP7.

Revert adding 'LinearGRAYColorspace' until we have a 3 way comparison for versions in place.

Fix datatypes

Fix collision with CRT symbol

Fix config.w32 ImageMagick 7 support

Register COLORSPACE_LINEARGRAY for MagickLibVersion >= 0x699

Fix 75596: Fix proto for Imagick::colorDecisionListImage

Tidying up test, and making skip work correctly.

....and so the long day drew on.

Tweaking skipif for setTextInterlineSpacing test.

Debugging version compare not working correctly.

only run setTextInterlineSpacing on known good versions.

Tweak version check for behaviour change.

Tidied test.

Added test for setTextInterlineSpacing.

Fixes #206