issue 151

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1662 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
update changelog

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1663 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
note about wire compatibility between versions

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1664 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
xml: base64 encoding on binary values (was CDATA)

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1665 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
fix typo

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1666 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
javadoc

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1667 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
write empty value instead

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1668 3b38d51a-9144-11de-8ad7-8b2c2f1e2016
XmlXOutput

git-svn-id: http://protostuff.googlecode.com/svn/trunk@1669 3b38d51a-9144-11de-8ad7-8b2c2f1e2016