Promote server-time formatting to Utils
Add CUtils::Get/SetMessageTags()
Add CIRCNetwork::FindChans()
Merge pull request #501 from jpnurmi/message-tags

Add CUtils::Get/SetMessageTags()
Cleanup old tests (pre-gtest)
Fix message tags parser and add test of it
Merge pull request #500 from jpnurmi/find-chans

Add CIRCNetwork::FindChans()
Merge pull request #493 from jpnurmi/server-time

Promote server-time formatting to Utils
Add module hooks for raw client and server messages
Merge pull request #494 from jpnurmi/client-raw-hook

Add module hooks for raw client and server messages
Add CChan::SendBuffer(client, buffer) overload

This allows interested parties eg. modules to to send a partial
buffer playback without reinventing the wheel.
Merge pull request #502 from jpnurmi/send-buffer

Add CChan::SendBuffer(client, buffer) overload
Don't ask for listen host in --makeconf

It confuses people too much.
Who wants ZNC to listen on localhost, may change settings immediately
after, via webadmin or /msg *status
Travis: change efnet server to a working one
Travis: add ASan and TSan builds
Travis: apply ASan/TSan flags to ZNC, not SWIG