Release 1.4.1

Fixed an issue that when compiled with libpcap that had a specific feature enabled it would result in a runtime error which could not be worked around.

Also fixed various compatibility issues and updated dependency documentation for CentOS.

Due to submodules in the repository please download this tarball:
https://www.dns-oarc.net/files/dnscap/dnscap-1.4.1.tar.gz
sha256: c65342c198caeabfa09d97126e07cb32e90cba98daddb622507dd606d018a024

Commits:

785d4c4 Fix compiler warnings
2d4df8d Fix #65: Update pcap-thread to v2.1.2
26d3fbc Fix #64: Add missing dependency
55e6741 Update pcap-thread to v2.1.1, fix issue with libpcap timestamp type
c6fdb7a Fix typo and remove unused variables