pyinfra v0.6

• Getting started
• Documentation

Changes in 0.6:

• Make --limit apply the limit similarly to state.limit
  • makes it possible to execute facts on hosts outside the --limit
  • --limit no longer alters the inventory, instead provides an "initial" state limit
• Add when=True kwarg to local.include
• Make it possible to add data to individual hosts in @vagrant.json configuration files
• Add memory and cpus facts
• Refactor how we track host state throughout deploy
• Refactor facts to only gather missing ones (enabling partial gathering)
• Improve check for valid /etc/init.d/ services by looking for LSB header
• Fix boolean constant detection with AST in Python3
• Fix parsing ls output where setgid is set
• Fix sudo/su file uploads with the @local connector