Adds a public interface apm::process_install_xml to use install.xml files subsequent to the bootstrap, change bootstrap to use the provided api, adds install::xml namespace + functions to support the various xml stanzas (such as set-parameter or set-join-policy) and a clean extension mechanism via functions in the install::xml::action:: namespace. Thanks to Lee Denison for cleaning up and extending the existing install functionality.
Showing maturity on the package install page. Renaming apm_maturity_int_to_text to apm::package_version::attributes::maturity_int_to_text (in namespace where it belongs)