Fix Parent attribute handling for features with multiple parents (#85)

* Fix Parent attribute handling for features with multiple parents

* Update change log

* No longer explicitly support python 3.5

v0.5!

Version 0.4!

Merge pull request #63 from standage/cli/sum

Added simple summary script to CLI

Release time

Overlap queries

Merge pull request #55 from standage/range_funcs

Simpler range and point overlap queries

Fly away v0.2.0

First release candidate for tag version 0.2.0

change log