Update composer.json

Update composer.json

Merge pull request pascalbaljetmedia#1 from pascalbaljetmedia/symfony…

…-4.0

Merge

Update composer.json

Merge pull request PHP-FFMpeg#437 from iganev/master

Added color option to waveform generation

Merge pull request PHP-FFMpeg#426 from PHP-FFMpeg/jens1o-patch-1

add Crop documentation

Revert "Audio Params" (PHP-FFMpeg#377)

* Revert "Correct  type in VideoFilters->framerate (PHP-FFMpeg#372)"

This reverts commit cedcd37.

* Revert "fix sources parameter type (array) in concat function (PHP-FFMpeg#363)"

This reverts commit af00b9d.

* Revert "Audio Params (PHP-FFMpeg#344)"

This reverts commit cb7d850.

Correct type in VideoFilters->framerate (PHP-FFMpeg#372)

Fixed title (PHP-FFMpeg#342)

Update of the README (PHP-FFMpeg#315)