process_tracker_python-123 Add Process Tracker finder

Added option to pass ProcessTracker a process_tracking_id which will
recreate an existing process run instance.  This is designed specifically
for processes that are still running and have not already completed.

This also included two new methods for retrieving source and target records
at the correct granularity.

Closes #123

Author: Alex Meadows

Pipfile

@@ -12,29 +12,29 @@ python-coveralls = "*"
 [packages]
 boto3 = "*"
 Click = "*"
-sqlalchemy = "==1.3.7"
-sqlalchemy-utils = "==0.34.1"
+sqlalchemy = "*"
+sqlalchemy-utils = "*"
 python-dateutil = "*"
 psycopg2-binary = "*"
 google-compute-engine = "*"
-snowflake-sqlalchemy = "==1.1.14"
+snowflake-sqlalchemy = "*"
 pymysql = "*"
 cx-oracle = "*"
 pymssql = "*"
-werkzeug = "==0.15.5"
-snowflake-connector-python = "==1.8.7"
-pyyaml = "==5.1.2"
-pytz = "==2019.2"
-pyrsistent = "==0.15.4"
-jsonschema = "==3.0.2"
-setuptools = "==41.1.0"
-aws-sam-translator = "==1.13.2"
-cfn-lint = "==0.23.3"
-coveralls = "==1.8.2"
-coverage = "==4.5.4"
-jsonpatch = "==1.24"
-jsondiff = "==1.2.0"
-python-coveralls = "==2.9.3"
+werkzeug = "*"
+snowflake-connector-python = "*"
+pyyaml = "*"
+pytz = "*"
+pyrsistent = "*"
+jsonschema = "*"
+setuptools = "*"
+aws-sam-translator = "*"
+cfn-lint = "*"
+coveralls = "*"
+coverage = "*"
+jsonpatch = "*"
+jsondiff = "*"
+python-coveralls = "*"
 
 [requires]
 python_version = "3.7"