clue/stream-filter

Feature: Improve performance by using global imports.
(#38 by @clue)

Improve API documentation and add support / sponsorship info.
(#30 by @clue and #35 by @SimonFrings)

Improve test suite and add .gitattributes to exclude dev files from exports.
Prepare PHP 8 support, update to PHPUnit 9 and simplify test matrix.
(#32 and #37 by @clue and #34 and #36 by @SimonFrings)

Fix: Check if the function is declared before declaring it.
(#23 by @Niko9911)

Improve test suite to also test against PHP 7.2 and
add test for base64 encoding and decoding filters.
(#22 by @arubacao and #25 by @Nyholm and @clue)

Feature / Fix: The fun() function does not pass filter parameter null
to underlying stream_filter_append() by default
(#15 by @Nyholm)

Certain filters (such as convert.quoted-printable-encode) do not accept
a filter parameter at all. If no explicit filter parameter is given, we no
longer pass a default null value.

$encode = Filter\fun('convert.quoted-printable-encode');
assert('t=C3=A4st' === $encode('täst'));

Add examples and improve documentation
(#13 and #20 by @clue and #18 by @Nyholm)

Improve test suite by adding PHPUnit to require-dev,
fix HHVM build for now again and ignore future HHVM build errors,
lock Travis distro so new future defaults will not break the build
and test on PHP 7.1
(#12, #14 and #19 by @clue and #16 by @Nyholm)

Feature: Support accessing built-in filters as callbacks
(#5 by @clue)

$fun = Filter\fun('zlib.deflate');

$ret = $fun('hello') . $fun('world') . $fun();
assert('helloworld' === gzinflate($ret));