v6.1.0

Features:

• Export tokenizer callback interface from main module (#751) ab0b3fc f59473a

Fixes:

• Allow XML tags to start with any character (#778) 0b94ab5

Upgrades:

• Bump domhandler from 4.0.0 to 4.1.0 e64e8e5
• Bump domelementtype from 2.1.0 to 2.2.0 8bc1719
• Bump domutils from 2.4.4 to 2.5.2 8b91d97 cf77476 7c233de

v6.0.1...v6.1.0