v6.16.4

Features

• add support for better Buffer JSON stringify (AnWeber/httpyac#796)

Fix

• handle dom parser exception for invalid xml (AnWeber/httpyac#821)
• do not log stack on assertions error (#338)
• only clear output channel for test runs (#337)
• add skipped test result on user cancellation (#323)
• only clear output channel for test runs (#337)