Fix remaining items for 3.0 release

[emgre]

• Fix migrate library to use header-only Automatak libs #290: the only lib that was still exposed publicly was log4cpp. Since it's small and not really used elsewhere, it was copied right into opendnp3 and all references to it was removed. The library doesn't have any public dependency 🎉 (except for OpenSSL when compiling with TLS support).
• Fix TaskConfig::With taking a reference with an undetermined lifetime #238: TaskConfig now takes a std::shared_ptr instead of a reference.
• Fix Use exceptions instead of error_code #293: Instead of having an out-parameter for the result of DNP3Manager calls, it now throws a DNP3Error.
  • All methods of DNP3Manager can throw an exception, notably because the manager was shutdown.
  • When creating a server, we check if we can bind to the network adapter and throw an exception if we cannot. This makes the library fail early in case of misconfiguration.
  • Exceptions can only be thrown in DNP3Manager. No need to try ... catch the world.
  • Instead of swallowing errors and returning nullptr in the Java bindings, an actual exception is thrown when something goes wrong.
• Fix remove support for transmitting link-layer confirmed user data in 3.0 #364: data-link confirmation is a broken feature in the spec and it therefore not supported anymore. It still supports receiving confirmed user data and acknowledging them for interoperability.
• Fix LinkLayer Race Condition #138: removing data-link confirmation greatly simplified the link-layer state machine. The transient TransmitWait state was removed so this old bug should finally be fixed.
• Fix Please support exporting cmake files #347: CMake export was added to the installed files.

[codecov]

Codecov Report

Merging #367 into develop will decrease coverage by 0.27%.
The diff coverage is 59.38%.

@@             Coverage Diff             @@
##           develop     #367      +/-   ##
===========================================
- Coverage    46.97%   46.70%   -0.28%     
===========================================
  Files          502      504       +2     
  Lines        15590    15584       -6     
===========================================
- Hits          7323     7278      -45     
- Misses        8267     8306      +39     

Impacted Files	Coverage Δ
cpp/lib/include/opendnp3/ConsoleLogger.h	0.00% <0.00%> (ø)
cpp/lib/include/opendnp3/DNP3Manager.h	100.00% <ø> (ø)
cpp/lib/include/opendnp3/ErrorCodes.h	0.00% <0.00%> (-25.00%)	⬇️
...lib/include/opendnp3/app/ControlRelayOutputBlock.h	0.00% <0.00%> (ø)
cpp/lib/include/opendnp3/app/OctetString.h	50.00% <ø> (-16.67%)	⬇️
cpp/lib/include/opendnp3/channel/ChannelRetry.h	100.00% <ø> (ø)
cpp/lib/include/opendnp3/channel/IChannel.h	100.00% <ø> (ø)
cpp/lib/include/opendnp3/channel/SerialSettings.h	0.00% <ø> (ø)
cpp/lib/include/opendnp3/link/LinkConfig.h	0.00% <ø> (ø)
cpp/lib/include/opendnp3/logging/ILogHandler.h	0.00% <0.00%> (ø)
... and 192 more

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[lgtm-com]

This pull request fixes 2 alerts when merging 8bfb68c into bf34bd7 - view on LGTM.com

fixed alerts:

• 1 for Inconsistent definition of copy constructor and assignment ('Rule of Two')
• 1 for Sign check of bitwise operation