preparing for 0.9.20 release

prepare for 0.9.19

handle X.509 extension to_text formatting regression due prev. commit

use debugStackTrace instead of e.printStackTrace

prepare release

Bump to 0.9.15 for release.

prepare for 0.9.14

SSLSocket#sysread do not copy bytes from buffer - instead re-use the …

…backing array

adds comment on exception with simple name NotFound

[skip ci]

preparing for 0.9.11