update changelog, small readme whitespace fix

updated changelog for 0.14.0

update to pd 0.53-1, a few comment typo fixes

updated changelog, bump to version 0.13.1

bump to 0.13.0, updated changelog

updated changelog, updated attribution year, version bump

update version in podspec

updated changelog

typo and date fix

udpated changelog and podspec, now version 0.11.0