Fix precedence of command line arguments Previously, when autogenerating the config file, the name of config itself was included in the YAML contents. This in turn caused the config file to be re-parsed again and any command line arguments were overwritten with values from the config file. Now the name of config file is not dumped if it is equal to the file being written, and the config file is not reparsed if it is the same file.

Allow default attributes to be set via config and cmdline This commit changes the default attribute list from a fixed '*' to a configurable list, defaulting to ['*']. It allows one to use config file or command line to set default attributes to retrieve and display - i.e. to set default attributes to '+' or to a list of multiple specific attributes. Printing or changing this value through env/setenv is currently not supported because env/setenv only work properly with string values while attributes is a list.