Always use size_t for strlen() return value, requested by Alexander Bluhm.
t/external/20_cert_chain.t was missing from dist.
Version number in META.yml was incorrect
Improvements to test t/external/20_cert_chain.t to provoke following bug:
Fixed crash due to SSL_get_peer_cert_chain incorrectly free'ing the chain
after use.
Fixed a problem when compiling against openssl where OPENSSL_NO_EC is set.