* Update PR template

* Added a check for max_age being greater than 0 (#172)

* Added a check for max_age being greater than 0

* Fixed flake8 by adding missing pydocstyle dependency

* Added the dependency to decrypt_oracle as well

* Added test for max_age<=0 ValueError

* Updated test for max_age<=0.0 ValueError

* Added negative test case

* Fixed KMS master key provider tests when default AWS region is configured (#179)

* Fixed KMS master key provider tests for users who have their default AWS region configured

* created fixture for botocore session with no region set

* add auto-used fixture in KMS master key provider unit tests to test against both with and without default region

* Wrote example and test for using one kms cmk with an unsigned algorithm

* Update one_kms_cmk_unsigned.py

* Update examples/src/one_kms_cmk_unsigned.py

Co-Authored-By: Matt Bullock <bullocm@amazon.com>

* isort-check now succeeds

* [issue-190] Regional clients modify default botocore session (#193)

* [issue-190] Creation of regional clients modifies default botocore session's region

* update changelog with changes for 1.4.1 release

* bump version to 1.4.1

* Updates to handle new pylint requirements (#196)

* pylint max-attributes appears to be ratcheted down recently

* remove unnecessary comprehensions

* whitelist some pylint use-constant-test false-positives

* reorganize backwards compatibility test requirements definitions
attrs==19.2.0 removed a deprecated feature that aws-encryption-sdk==1.3.3 depended on.
This reorganization lets us define specific requirements bounds for old versions of aws-encryption-sdk
that will probably continue to be necessary as these old versions age.

* remove unnecessary comprehensions

* add newlines to the end of all requirements files

* help pylint ignore mypy type use