Version Bump + Docs (alvinwan#110)

* fixes alvinwan#106 version bump request

* finished basic guides (added modification)

* added crazy opt arg test from plastex/plastex#129

added navigation, search guides; updated soup guide

version bump

prepare 0.2.1 release 🎊

more list-like api--append, insert, remove etc.--and expose 'all' attr

bump version to 1.3

bump to v.0.1.2, uncomment test

bump to v.0.1.2, uncomment test

updated readme, version, and recovered test coverage