Version 0.3.4

Patch release: fixing a bug with copy-on-write (issue 316). credit @longqimin

Version 0.3.3

Patch release: fixing a bug that might affect legacy x64 processor when checking the equality between bitmaps.

Slightly improved portability

v0.1.1

Improving portability and add missing externs.

First version with unity build

v0.1.0

Applying clang format throughout.

Feature-complete version

v0.0.3

Minor update to README following recent PR

complete research prototype

v0.0.2

Implementing "remove" as per https://github.com/RoaringBitmap/CRoarin…