Swiftline version 0.5.6

Update Linux dependencies.

Swiftline version 0.5.5

Add compatibility with Linux.

Swiftline version 0.5.4

Update task executors to get the inheritance environment from the user shell.

Swiftline version 0.5.3

Created a new Task Executor for logging in a file the result of running a command.

Swiftline version 0.5.2

• Remove dependencies to third-party dependencies managers - set to swift-package-manager
• Remove outdated documentation

Swiftline version 0.5.1

• Upgraded to Swift 5.0
• SPM compatibility