Revision 0.3.3:
Improved ASN.1 types instantiation performance
Improved BER/CER/DER decoder performance by not unconditionally casting substrate into str/bytes.
Fixed exponential index size growth bug when building ambiguous NamedTypes tree
Fixed constructed types decoding failure at BER codec if running in schema-less mode
Fixed crash on prettyPrint'ing a SEQUENCE with no defined components
Fixed SetOf ordering at CER/DER encoder
Fixed crash on conditional binascii module import
Fix to TagSet hash value build

(adam)