Reduce calling babel:octets-to-string. cl-irregsexp can handle octet-vectors like strings.
Reduce subseq in get-header-block for memory efficiency.
Add optimize options to get-header-block.
Create a static octet vector in read-time.
Add type declarations to convert-headers-plist.
Add a new type 'simple-byte-vector'.
Merge pull request #13 from fukamachi/fast

Improve the performance more