Changes in version 1.5.7:

    o   Removed c() method for InteractionSet, rbind method for
	 GInteractions.

    o   Generalized ContactMatrix to allow any type of matrix-like object.

    o   Supported inflate() for GInteractions without specifying fill.
	 Changed default fill for InteractionSet to missing.

    o   Separated subsetting and combining documentation into two different
	 pages.

    o   Added convenience wrappers for resize(), narrow() and shift() on the
	 GenomicRanges slot in all objects.

    o   Modified anchors() to return a list rather than GRangesList.

    o   Modified width() for GInteractions to return a list() rather than a
	 DataFrame(). Also changed names of list element.

    o   Added the anchorIds() function for rapid extraction of anchor IDs.

    o   Removed the requirement for identical regions in pcompare() and
	 match().

Changes in version 1.4.0:

    o   Deprecated anchors<- in favour of anchorIds<-, to avoid confusion
	 about 'value' type.

    o   Added first(), second() functions for convenience.

    o   Updates to documentation, tests.

Changes in version 1.2.0:

    o   Allowed specification of NULL in row/column arguments to inflate().

    o   Fixes to tests and code in response to updates to BiocGenerics,
	 S4Vectors.

    o   Added CITATION to the F1000Res article.

Changes in version 1.0.0:

    o   New package InteractionSet, containing base classes for genomic
	 interaction data.