v0.5.0

Fixes:

• Fixed template boolean checks, now checks against nil to allow for false to
  be used.
• Logs files now correctly use NONE and AUTO values.
• Fixed supervisord::supervisorctl define type to have correct spacing.
• Corrected permissions for created conf files.
• Fixed unix_username and unix_password use in unix_http_server config
• Corrected README example class.

Enchancements:

• The config_include location can now be purged with the config_include_purge
  boolean.
• supervisord::rpcinterface and supervisord::ctlplugin are now available define types.
• boolean define type params can now be both strings and booleans
• supervisord changes will now use supervisord::supervisorctl to reread and update all
  resources

Notes:

• Bumped stdlib to version 4.4

Many thanks for the PRs from @kitchen, @jsok, @kamholz, @rayl, @fridim,
@pavelsmolka and @dol