Merge pull request jrxFive#111 from jrnk/master

Support stopping an allocation

bump version to 1.2.1 for exception hotfix (jrxFive#110)

switch user to token, add wheel and skip existing options (jrxFive#106)

bump version

bump version for query string fix

Update requests (jrxFive#80)

* update requirements-dev.txt by removing requests, update travis.yml to install both requirements and requirements-dev

Base Requester and Exceptions (jrxFive#68)

* restructure base Requester class, inherit from class instead of passing object to each instantiation. Additional exceptions for status_codes
* add querystring helper, pass dict as params in endpoints. fix client tests.
* add documentation for jobs.parse method
* add client read_at file offset
* add client stream_file (jrxFive#72)
* Client stream _ogs (jrxFive#73)
* Client gc_allocation (jrxFive#74)
* add gc_all_allocations

bump version to 0.9.0

Nomad node drain 0.8 (jrxFive#54)

* add exception for InvalidParameters add functionality for drain_node_with_spec and purge_node. Remove 3.3 and add 3.6 python versions to test against

bump version

new features, stats endpoint, metrics endpoint, env_vars