Fixes
- Fixed calculating expected community cdf ([48](https://github.com/AleksanderWWW/abcd-graph/pull/48))
- Fixed build crashing with integer beta and gamma values ([48](https://github.com/AleksanderWWW/abcd-graph/pull/48))
Changes
- Made property computation lazy ([45](https://github.com/AleksanderWWW/abcd-graph/pull/45))
Enhancements
- Sped up building `Xi matrix` by pre-computing community volumes and empirical xi's ([47](https://github.com/AleksanderWWW/abcd-graph/pull/47))