Changes from 1.1.4 to 1.2.0
---------------------------

** Improvement
    * Variables are not preserved during write-back if they are
      defined as framework properties

** New features
    * Add a BaseManagedServiceFactory to help writing such factories

Changes from 1.1.2 to 1.1.0
---------------------------

** Bug
    * Access to system properties should be done in a priviledged
      block.
    * The manifest parser does not correctly handle empty strings.

** Improvement
    * Add java.util.Properties backward compatibility methods
    * Allow the substitution methods to receive a callback to 
      obtain custom values

Changes from 1.0.0 to 1.1.0
---------------------------

** New Feature
    * New org.apache.felix.utils.collections.DictionaryAsMap class 
      to wrap a Dictionary as a Map
    * New org.apache.felix.utils.properties.InterpolationHelper to
      interpolate a Map of properties using ${xx} replacements
    * New org.apache.felix.utils.properties.Properties class to
      load/save properties and allow editing them without loosing
      the user formatting
