OmeroCpp: Add cmake build system
travis: Add and use components/tools/travis-build
blitz: Remove slice2cpp support
OmeroCpp: Remove gtest
OmeroCpp: Replace scons C++ build with cmake
cmake: Build examples
examples: Remove SCons C++ logic
cmake: Split out api and model sources and headers
OmeroCpp: cmake: Reconsolidate split sources into single library
Add `--auto_close` option
5.0.x: use a structured annotation for auto-close
5.0.x: add public handle field
Better error handling
auto-close integration test
Move NSAUTOCLOSE detection earlier

During cleanup, the transaction has already exited and
therefore there's no way to properly query some types
of annotation (e.g. those which are unloaded). Instead,
we check earlier for the appropriate annotation and only
re-act during autoClose().

Note: throwing exceptiongs from `getResponse()` is a *bad*
      idea.
More null checks in detectAutoClose
And even more null checks
Fix import errors post-rebase
OmeroCpp: Correct test-compile target, delegating to build
cmake: Add cmake 3.0 compatibility check

From bioformats develop.