Merge pull request #36 from cykl/faster_hll_card

Faster hll card
Implement ConcurrentStreamSummary
Fix.
Improvements to prevent corruption of the minimum value,
Combined redundant classes (ScoredItem and ErrorAndCount),
Prevent ever-increasing variable "size".
Merge branch 'master' of https://github.com/eric-vlaanderen/stream-lib into eric-vlaanderen-master
remove java 7 specific language features
add missing imports
Fix java 6 regression introduced by 0fcb80561cd9a5b3e7032224a1efd8749ee21b0d
Merge pull request #40 from cykl/fix_java6

Fix java 6 regression introduced by 0fcb80561cd9a5b3e7032224a1efd8749ee21b0d
Add Travis CI configuration file
Merge branch 'master' into orange
Merge remote-tracking branch 'upstream/master' into orange
Merge branch 'travis-ci' into orange