Provides a reconciler add-on for an ITextViewer.
A reconciler provides generic synchronization support with
the content of the document serving as the ITextViewer's input.
There is no explicit model of what is synchronized.
Package Specification
IReconciler defines the concept of a reconciler. It collaborates
with content type specific reconciling strategies (IReconcilingStrategy)
which perform the synchronization for a given dirty region. The package
contains a default implementation of IReconciler (Reconciler).
Reconciler implements reconciling as a periodic background activity
and folds co-located changes while being inactive.