hubDevs 1.1.0

• Add development: mode: auto to _pkgdown.yml template so pkgdown builds
  dev documentation into docs/dev/ (#54).
• Disable indentation_linter in .lintr template to avoid conflicts with Air
  formatting (#55).
• Add build parameter to use_hubdev_readme() and create_hubdev_pkg() to
  allow skipping devtools::build_readme(), fixing r-universe build failures
  (#56).