v0.1.0

• general cleanup and refactoring
• v0.5 updates
• string type cleanups
• lambda permissions functions
• Use built in AWS service-role/AWSLambdaBasicExecutionRole instead of creating policy for cloudwatch log access.
• Use update_lambda() in create_py_lambda() instead of deleting and re-creating.
• experimental userimg creation
• disable path and timestamp checks in Base.stale_cachefile()
• deploy lambdas without S3
• use AWSEC2.ec2_bash in create_jl_lambda_base
• set default RAM size to 1536 (was 1024)
• added deploy_jl_lambda_base