.gitignore: idea
Merge remote-tracking branch 'upstream/develop' into develop
tostring.escape : optimization

use of xml.etree.ElementTree._escape_attrib and xml.etree.ElementTree._escape_cdata
escape: imports at the top
escape: use xml.etree.ElementTree._escape_attrib to avoid duplication
Merge pull request #254 from barreverte/develop

tostring.escape : optimization