bump version to 0.20.3
bump version to 0.20.3

Ignore-this: 9532e2c165a8192e073b719f416ffea6

darcs-hash:20121108192254-2bae8-a04757a8986dcbdfc62bc72ae7fca513380ca989.gz

the-real-blackh/hexpat,the-real-blackh/hexpat,the-real-blackh/hexpat