v0.2.6: Issue_33 and 31 fix

A fix related to https://github.com/dpeerlab/Palantir/issues/33 and https://github.com/dpeerlab/Palantir/issues/31

v0.2.5

Issue_28 fix

A fix related to [issue#28](https://github.com/dpeerlab/Palantir/issues/28).
When identifying terminal states, duplicate values were generated instead of unique ones.

v0.2.3

PyPI release

v0.2.2

Speed up nearest neighbor computation
Other miscellaneous fixes

v0.2.1

Scanpy support, Updates for rpy2 interface

v0.2

Palantir version used in the manuscript