Merge pull request #115 from deepanshs/djs/perp_version_release

Prep for v0.7.0 release

Merge pull request #79 from deepanshs/djs/v0.6

v0.6 update release

update readme.md

Update CHANGELOG

Merge pull request #13 from DeepanshS/local

Clean and simplify code. Improve readability.

edit changelog.

more tests

update changelog.

update changelog.

Merge pull request #9 from DeepanshS/latest

Add compatibility of the CSDM object with the matplotlib plotting functions.