Now ESC cancels any edit operation in progress.
The editorBase is now part of the API.
API addition: if value() returns a plainobject the key/values are sent
to the server.
Release v0.10.0.

Heavily modified API for editor plugins.

Hitting the ESC cancels any editing operation.

Actual usage is not much changed since previous release. The data-nil
attribute is now replaced with data-placeholder (although nil is still
retained as a alternative name).
Added tag v0.10.0 for changeset 49c13b18ff14