Small imports cleanup, and autoload_operation improvements, bump up p…

…atch version

Merge pull request #524 from QualiSystems/Release_2.4.4

Release 2.4.4

updated root version.txt

update 2.4.X with: support for 2nd gen shells and apps, ami lookup, s…

…upport for both subnet name or cidr block

bumped release version for cloud formation updates

Merge pull request #476 from QualiSystems/bug/should_be_able_to_pass_…

…protocol_case_insensitive

also, here...

Merge pull request #472 from QualiSystems/develop

Merging dev to master

Increasing retry max attempts

(cherry picked from commit 25ebdd7)

bumping to version 2.1.4

bumping version to 1.4.2