* Ability to allow BER-encoded data with knowing if any of specified
field has either DER or BER encoding (or possibly indefinite-length
encoding)
-* Ability to use mmap-ed files, memoryviews, iterators and CER encoder
- dealing with the writer, giving ability to create huge ASN.1 encoded
- files without storing all the data in the memory first
+* Ability to use mmap-ed files, memoryviews, iterators, 2-pass DER
+ encoding mode and CER encoder dealing with the writer, giving ability
+ to create huge ASN.1 encoded files with very little memory footprint
* Ability to decode files in event generation mode, without the need to
keep all the data and decoded structures in the memory
* __slots__, copy.copy() friendliness