Make test slightly easier to debug on missing image.

Correct links to travis.

Comment out useful part of test, as the thing can't actually be tested.

Correct test for houghline name.

Added sample input image for testing and updated test script

Correct comments

corrected zend args and added example for houghline

Added Hough line detector php method

Add ini settings to work around segfault.

Added the 'imagick.shutdown_sleep_count' (default 10) and 'imagick.set_single_thread' (default Off) to work around a segfault in OpenMP.

Adding debugging tool/notes.

Adding debug tools.

add missing arginfo for two methods

in PHP-8, presence of arginfo is checked and an E_NOTICE is thrown at
startup if it's missing

prefer instanceof_function over instanceof_function_ex

the latter has been removed in PHP-8 and the current usage is consistent
with what instanceof_function (without the ex) gave you an

prefer instanceof_function over instanceof_function_ex

the latter has been removed in PHP-8 and the current usage is consistent
with what instanceof_function (without the ex) gave you anyways

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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.

stop setting `no_separation` in PHP-8 and on

this field has been removed for PHP-8

conditionally re-add some TSRM defines

these were removed with PHP-8. They were empty definitions ever since
PHP-7

Update README.md

rainbows intensify.

Minor update to README.md

Correct the link URL

Clarify Versions

Update check_methods to get the latest methods from the ImageMagick website.

Remove old package maintainers.

Revert author changes as pecl upload didn't accept them.

Correct date in package.xml

Merge branch 'testing_ALPHACHANNEL_REMOVE'

* testing_ALPHACHANNEL_REMOVE:
Correct version check for FlattenAlphaChannel and RemoveAlphaChannel.

Correct version check for FlattenAlphaChannel and RemoveAlphaChannel.