v6.0.4

New features

• Added plugin for Random Dot Kinematograms by @vrsivananda. Thanks for this major contribution!
• Added the ability to display page numbers in the instructions plugin. Thanks @mjaquiery!
• External scripts can now be optionally executed in the external-html plugin. Thanks @onkeltom!

Documentation updates

• The PHP script example in the documentation for saving files to a server is fixed for recent versions of PHP. Thanks @akochari!
• localSave() for data collections works in recent versions of Safari. Thanks @spencerking!
• Audio examples are updated to reflect the Chrome 66+ restrictions on playing audio. Thanks @mpezzo!

Bug fixes

• The free-sort plugin now properly records the final locations of the images.
• The instructions plugin handles custom key assignments when allow_backwards is false. Thanks @pfeyz!
• In some older browsers, the display element would lose focus when a button was clicked. By default, the display element is automatically focused at the start of every trial. Thanks @akochari!