* [AP_STAGE,DEB] Assert AP Stage duration.
* [HTML_PL_TERM,EXT] Use thousands separators for HTML generated content including integers.
* [XSD_DECIMAL,FIX] Added determinism of canonical writer of decimal fractions.
* [XSD_DURATION,FIX] Sign in canonical duration writer not correct.
Merge branch 'master' of https://github.com/wouterbeek/PGC