Automatic invokation of standard event handlers onSelect, onDeselect etc

[hashchange]

Event handlers with standard names are run automatically if they exist, just like in Marionette. These standard names are

• onSelect, onDeselect, onReselect (selectable model, single-select collection)
• onSelectNone, onSelectSome, onSelectAll, onReselect (multi-select collection)

Based on my previous commits. Tests and documentation are included, as always.