add stubbles\streams\InputStreamIterator, stubbles\streams\MappingInputStream, stubbles\streams\MappingOutputStream
add some helpful iterators
merge upstream
Merge remote-tracking branch 'upstream/master'
remove var_dump()
allow peeking at keys
initial work for sequences, needs more tests
iteration on elements should stay internal
fix risky test by asserting that iteration actually took place
more work
refinement
fix test
Merge remote-tracking branch 'upstream/master'
upmerge
upgrade
use MappingIterator
update since info
update since info
rename
add some tests for collectors