Add ALPHACHANNEL_BACKGROUND constant
Merge pull request #34 from DASPRiD/feature/background-alpha-constant

Add ALPHACHANNEL_BACKGROUND constant
Added version check for methods. Fixes #33
Missed some version check for #33
Added test that Imagick is actually loaded.
Added version check for color matrix image.
fix Imagick::count() with PHP 5.6.0RC2
add the optional mode (not used)
add optional module dependency
no need for conditional, count_elements exists (at least) since 5.0.0
Merge pull request #35 from remicollet/issue-count

Fixed Imagick::count() to have the same parameters as the countable interface. This fixes a BC break introduced in PHP 5.6.0RC2, which may be reverted or fixed, but respecting the countable interface is the correct behaviour anyway.
Fixed const correctness changed in 5.6
Merge pull request #36 from tony2001/master

Merging dependency declaration for SPL, as the SPL must be loaded first. This only caused an issue when Imagick was compiled statically.
windows build fixes, 3 methods deprecated
remove extra IMAGICK_METHOD_DEPRECATED call
Added getColorQuantum to allow direct access to exact colors and tidied up quantum handling else. Small tidy up of method docs. Added tests for colors.
Normalised the methods for testing pixel similarity
isPixelSimilarQuantum - Normalised version 0-1
isPixelSimilar - Quantum version 0-QuantumRange
isSimilar - aka legacy method name aliased to isPixelSimilarQuantum
Merge pull request #43 from Danack/quantumTYpe

Quantum type is dependent on if ImageMagick was compiled as HDRI or not.
Merge pull request #40 from Jan-E/master

Windows build fixes, 3 methods deprecated
Update README.md

Added link to example site