LibCrowds/libcrowds-viewer: v5.0.0

This release largely cleans up options that added extra complexity but no real value to the module as they can be handled directly by the client.

• Where button options have been removed, the same functionality can be achieved by adding a custom button via the toolbar-buttons option.
• Where default modals, such as the share modal, the same functionality can be achieved by adding a custom modal using the lv-modal component.

See the docs for more details.

• The navigation viewer config option has been removed
• The generator task config option has been removed
• The creator task config option has been removed
• The buttons viewer config option has split into toolbar-buttons and sidebar-buttons
• The like button has been remove, along with the liked task config option
• The show-note options has been removed
• The share button and modal have been removed
• Dropped support for node.js <= 5

• Custom toolbar buttons can be added via the toolbar-buttons viewer config option
• All toolbar button clicks will emit a toolbarbtnclick event
• Custom modals can be added with the lv-modal component
• Add disable-modals option, so that the client can use their own
• Task target configurations containing a FragmentSelector are highlighted (rather than having to specify additional highlights or bounds options)