Playback node now publishes simulated time.
Added basic processes for topic publishing.
Sim time is now awaited correctly.
All processes with sim time.
First full working version.

Topics are played back but this is all at the mercy of rospy.sleep
Debugging ulimit issue.
Moved back to processes to test.
Handlings strings which cannot be treated as UTF-8 as binary.
Adding meta information to C++-logged documents.
Building up type processing knowledge.
Adding meta information into C++ logging.
Calling on correct document.
Looking in to date issue.
Added meta logging to other C++ loggers.
This adds latched recording and playback to the log and playback nodes.

This is the final part of the functionality to close #5
Moved mongodb_store_cpp_client files into mongodb_store package.
Added cpp changelog to overall package.
Added boost to dependencies.

Refactoring of package earlier plus this fixes #95 (hopefully)
Fixed pacakge name in test launch file.
Updated URL and description.