added a retry mechanic to PostJsonHelper to avoid 400 error issues (#130

)

* added a retry mechanic to PostJsonHelper to avoid 400 error issues

* added test cases to verify the retry once system

added get and set secrets endpoints for python client (#129)

* added get and set secrets endpoints for python client

* bumped version support to 1.4x of adk

* adjusted description field to always be present

* added better test coverage, removed get test (verified works on marketplace)

get available SCMs support (#128)

* added an scm get operation in the client class

* added testing app endpoint, fixed client.create for external scms

* added very basic test

kwarg added (#127)

fixes non 2xx responses (handles failures better) (#126)

add versions, environments and improve test coverage (#125)

* major updates to all paths, removal of class creation from API requests

* added more test coverage for versions and info functions

* removed unnecessary class conversion function

* forgot to remove a dependency, and self signed cert branch wasn't updated

* replaced all create/publish/update endpoints to use fixed urls and built-in requests package

* simplified builds to follow the normal getJsonHelper pattern

* renamed builds to get_builds

* added an update endpoint test

* fixed the put operation; follows the other helper endpoint systems

* removed mutating and cluster specific test cases from client tests (python 2)

removed _all_ test.algorithmia.com references

update requirements to satisfy actual ADK dependency versions (#123)

[ALERT] Fix for breaking changes introduced by Bearer Token work (#121)

* critical fix to bearer token breakage

* corrected issue with header initialization in json helper

* removed else exception, no auth is passed by internal algo API processing

* added a test case tracking authorization required server responses and system handling no auth provided gracefully

* added a false flag to actually invalidate environment variables for client auth

* cleaned up client, used environment variable manipulation in the test suite

* removing problematic server test

added the freeze automation to the client object (#120)

* added the freeze automation to the client object, pulled from CLI

* added test cases for freeze

* fixed imports

* fixed directory collision