6.6.0: Variadics

RFCs

• Implemented next part of xp-framework/rfc#297: Merged PR #100
  (@thekid)
• Implemented next part of xp-framework/rfc#298:
  . Removed deprecated xp::null()
  . Removed deprecated xp::nameOf()
  . Removed deprecated xp::error() and replace by exceptions
  . Removed deprecated this() - replaced by syntactic support
  (@thekid)

Bugfixes

• Fixed fatal errors when parsing URLs w/ hashes.
  See xp-framework/xp-framework#380
  (@patzerr)
• Fixed "Call to undefined method lang.FunctionType::isGeneric()"
  in lang.WildcardType (occurred in the sequence library when
  using the current development checkout)
  (@thekid)
• Fixed FunctionType not handling varargs correctly - @thekid

Features

• Merged PR #107: Variadic parameter support in reflection
  (@thekid)