Issue#312: Add notempty()
Issue#312: Fix the problem with sort() by implementing internalSort() in Ceylon, having factored out ASequence (will rename that to ArraySequence once I've unpicked the rat's nest).
Issue#312: Remove instantiations of ArraySequence from primitive array iterables
Issue#312: Actually delete the Java impl of internalSort()
Issue#312: Remove instantiation of ArraySequence from process
Issue#312: Remove sequential and rewrite Util.sequentialInstance() to use notempty
Issue#312: Fix for the sortInPlace() list wrapper
Issue#312: Remove a bunch of places where we instantiate ArraySequences directly and
delete the ArraySequenceTest since we'll sortly be removing ArraySequence.
Issue#312: Implement a SequenceBuilder in Ceylon.
Issue#312: Fix an evil little bug.
Issue#312: Push members of ArraySequence down to Tuple.
Issue#312: Fixes for the removal of SequenceBuilder
Issue#312: Remove ArraySequence.
Issue#312: Fix shitty bug
Issue#312: Tuple is native
Issue#312: Rename notempty->sequence and ASequence->ArraySequence.
Issue#312: I'm not sure WTF is going on here, but javac started throwing NPEs for the instantiation of the Ranged$impl, and really weird things started happening. I seem to be able to delete this stuff to do with Ranged.
Issue#312: Remove unused imports (and apparently these are gone now anyway??!)
Mark String.keys as transient
Issue#312: More fixes now that Iterable.sequence is a method