Explicitly initialise variable.

use PHP_VERSION_ID instead of ZEND_ENGINE_3

Moving method and param info to stubs.

ImagickPixel and ImagickKernel done. Need to write a tool to automate Imagick and ImagickDraw to preserve ifdefs.

update for object handlers being called with zend_object* in PHP 8

for now, there's no ZEND_ENGINE_4 define, so this commit changes many
checks to be based on PHP_VERSION_ID.

Corrected typo for columns => rows.

Added test to check for that explicitly.

And so the long day wore on.

Correcting signed/unsigned checking.

Change to unsigned long to avoid C complaining.

Typo.

avoid unsigned less than equal warning.

Bounds check kernel origin position.

Correct not fully initialized variable.

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

Fix collision with CRT symbol

Fix for 145 failing test +3 squashed commits. Thanks to rimvislt.

ImagickKernel internal state no longer NULL.

The ImagickKernel object contains some internal state that MUST be set to have a valid object. To make this be enforced, the constructor is now p

ImagickKernel internal state no longer NULL.

The ImagickKernel object contains some internal state that MUST be set to have a valid object. To make this be enforced, the constructor is now private, and there are NULL pointer checks in place where the kernel is used.

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fix build warnings (-Wmaybe-uninitialized)

Updated CFLAGS to warn about implicit function declarations, and fixed the revealed issues.

Apparently ZVAL_DEREF is a thing.

Fix for PHP 5.x compatibility.

Use correct type for long.

Correct type for kernel values.

Add define to cater for different type in IM6/7

Added version check around MorphologyApply function forward define.

Add support for ImageMagick 7.

Add basic support for ImageMagick 7, updated tests to not fail for functions removed in IM7. Added Travis tests against ImageMagick git dev repositories.