version 0.2.7

Testing stringer, and avoiding negative values for large integers.

Merge pull request RoaringBitmap#61 from Coornail/master

Fix typo in Bitmap.GetCopyOnWrite() parametering

version 0.2.4

version 0.2.3

version 0.2.2

improved coverage, commented out unused code

Fixing issue RoaringBitmap#54

Fix for RoaringBitmap#53

Another old reference.