use PHP_VERSION_ID instead of ZEND_ENGINE_3

Move ImagickDraw to have functions entries generated from stub.

Fixed some docblocks, based on the code of that function

Correct error corrections.

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

Change "Imagemagick" to "ImageMagick"

Fixed ifdef around setOpacity and "typo".

Apparently ZVAL_DEREF is a thing.

Adding missing functions and constants.

* Imagick::autoGammaImage([int channel = CHANNEL_ALL])
* Imagick::autoOrient()
* Imagick::compositeImageGravity(Imagick $image, int COMP

Adding missing functions and constants.

* Imagick::autoGammaImage([int channel = CHANNEL_ALL])
* Imagick::autoOrient()
* Imagick::compositeImageGravity(Imagick $image, int COMPOSITE_CONSTANT, int GRAVITY_CONSTANT)
* Imagick::localContrastImage(float radius, float strength)
* Imagick::DIRECTION_LEFT_TO_RIGHT
* Imagick::DIRECTION_RIGHT_TO_LEFT
* Imagick::SPARSECOLORMETHOD_MANHATTAN
* ImagickDraw::getOpacity() : float
* ImagickDraw::setOpacity(float opacity) :bool
* ImagickDraw::getFontResolution() : array
* ImagickDraw::setFontResolution(float x, float y) : bool
* ImagickDraw::getTextDirection() : bool
* ImagickDraw::setTextDirection(int direction) : bool
* ImagickDraw::getBorderColor() : ImagickPixel
* ImagickDraw::setBorderColor(ImagickPixel color) : bool
* ImagickDraw::getDensity() : string|null
* ImagickDraw::setDensity(string density_string) : bool
* ImagickPixel::setColorFromPixel(ImagickPixel $srcPixel) : bool

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defined is not a thing....

Function name was changed arbitrarily.

Fix for PHP 5.x compatibility.

Use correct type for long.

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.

Removed check of whether font is available as the font family name is not always the same as the font name. In particular the font name can have hyphens e.g. "Bitstream-Vera-Sans-Mono-Roman" whereas

Removed check of whether font is available as the font family name is not always the same as the font name. In particular the font name can have hyphens e.g. "Bitstream-Vera-Sans-Mono-Roman" whereas the family name does not "family: Bitstream Vera Sans Mono" This fixes #77 but may lead to some code that currently throws an exception to pass with an error silently.

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Enabled -Wall and fixed various small issues. Added test for progress monitor via callback, which is broken in 7.

Corrected parameters to be size_t where ImageMagick requires them.

Fixed missing ifdefs around code, and efree that had disappeared.

Fixed type for pushpattern string len param.

Added a enough IFDEFs to allow compiling against PHP 5.x and "7".

Fixed values not being found in ImagickDraw::affine.

Fixed segfault, correct values are not being populated though.

Corrected size_t issues.

Fixed "7" compile issues.

Initial NG compilation - it compiled but opening files doesn't work.