XMLUnit.NET 2.11.2

This release adds an option to specify the culture used to parse patterns in the isDateTime placeholder.

Full list of changes:

• IsDateTimePlaceholderHandler now supports an optional second argument specifying a
  different CultureInfo than the invariant culture used by default as
  CultureInfo name like de or fr-FR.

  Also modified the logic when no argument is present to still try
  parsing using the current culture and then trying a set of ISO
  patterns using the invariant culture in turn - making isDateTime
  match what the Java version does mor closely.

  PR #54 based on
  PR xmlunit/#335 by @jmestwa-coder