SequenceableCollection>>#beginsWith: and #endsWith:  have been replaced
          Reason for change
          The #beginsWith: and #endsWith: methods were provided as part of the Seaside portability code.  It was then discovered that these methods are not cross-platform portable.  They do not give the same result for an empty argument (for example, ‘’ or #()) on all platforms.  Rather than attempt to get some platforms to change their implementation of these methods, it was decided to provide new methods that have the desired behavior on all platforms.
          Change
          SequenceableCollection now provides platform-independent methods #beginsWithSubCollection: and #endsWithSubCollection: which should be used in place of #beginsWith: and #endsWith: (which have been removed).  
          Action required
          Change:
  aCollection beginsWith: aSubCollection
to:
 aCollection beginsWithSubCollection: aSubCollection
Change:
  aCollection endsWith: aSubCollection
to:
 aCollection endsWithSubCollection: aSubCollection
         
        
          Last modified date: 07/02/2019