Deps update

[prolic]

resolves #16
superseeds #17

@Khartir I updated some components incl phpunit and enlarged the travis build matrix.

Currently 4 tests are failing, do you have time to check them?

1) HumusStreamResponseSenderTest\StreamResponseSenderTest::testSendHeadersAndStreamWithEnabledRangeSupportWithInvalidRangeStartHeader

Failed asserting that two strings are identical.

--- Expected

+++ Actual

@@ @@

-

+This is a sample file that will be streamed during the unit tests.

/home/travis/build/prolic/HumusStreamResponseSender/tests/HumusStreamResponseSenderTest/StreamResponseSenderTest.php:212

2) HumusStreamResponseSenderTest\StreamResponseSenderTest::testSendHeadersAndStreamWithEnabledRangeSupportWithInvalidRangeEndHeader

Failed asserting that two strings are identical.

--- Expected

+++ Actual

@@ @@

-

+This is a sample file that will be streamed during the unit tests.

/home/travis/build/prolic/HumusStreamResponseSender/tests/HumusStreamResponseSenderTest/StreamResponseSenderTest.php:234

3) HumusStreamResponseSenderTest\StreamResponseSenderTest::testSendHeadersAndStreamWithEnabledRangeSupportWithInvalidRangeStartAndEndHeader

Failed asserting that two strings are identical.

--- Expected

+++ Actual

@@ @@

-

+This is a sample file that will be streamed during the unit tests.

/home/travis/build/prolic/HumusStreamResponseSender/tests/HumusStreamResponseSenderTest/StreamResponseSenderTest.php:256

4) HumusStreamResponseSenderTest\StreamResponseSenderTest::testSendHeadersAndStreamWithEnabledRangeSupportWithInvalidRangeStartHeader2

Failed asserting that two strings are identical.

--- Expected

+++ Actual

@@ @@

-

+This is a sample file that will be streamed during the unit tests.

/home/travis/build/prolic/HumusStreamResponseSender/tests/HumusStreamResponseSenderTest/StreamResponseSenderTest.php:278

[coveralls]

Coverage decreased (-1.1%) to 92.216% when pulling 56f42f5 on deps_update into 8854301 on master.