doc: update all copyright headers to 2018

doc: update header files years

Release files for version bump to 1.4.3

pcap: Add compatibility with latest libcap versions in OpenBSD ironte…

…c#163

doc: prepare sources for 1.4.1

rtp: improve reverse stream detection. irontec#135

Update version to 1.3.1

tls: openssl: added prf functions for tls 1.1 and tls 1.2 irontec#104

Change version to 1.2.0 📝

Call Flow: Fix arrow directions in compress mode