minor: Preserve source elements' attributes

v1.3.0

Merge pull request #14 from Financial-Times/preserve-source-attributes

minor: Add an onConfirm function which is called when the user selects an option

Add an onConfirm function which is called when the user selects an op…

…tion

This function is called with the selected option in it's original form. I.E. The option value which was returned by the `source` function before being passed through `mapOptionToSuggestedValue`.

minor: Provide an API for applications to be able to transform the return values from their `source` function before rendering the suggestions.

v1.1.0

Add mapOptionToSuggestedValue to this.options

patch: Only allow specific options to be passed to accessible-autocomplete

only assigns options which are supported by o-autocomplete to this.op…

…tions

patch: Make sure the clear button is associated with the correct input element

Use the input's ID as the argument to createClearButton instead of pa…

…ssing an empty string

patch: Update demo titles

When two titles are the same it is confusing.

patch: Update support status

v1.0.2

Update support status

patch: Correct static demo html

v1.0.1

Correct static demo html