Octomap-py

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- Fixed Wpedantic warnings
- Removed problematic INSTALL_NAME_DIR (maxOS workaround)

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- Fixed ROS buildfarm failures for octovis

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- Improved compatibility with modern compilers and ROS2

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- Fixed getUnknownLeafCenters to return true leaf centers (thx to A. Ecins)
- dynamicEDT3D templated over OctoMap type (thx to J.V. Gomez)
- Added optimized rendering option and command line option for tree cutoff
in octovis (thx to F. Endres)
- Added optional Qt5 support in octovis (thx to K. Stepanas)
- Improved the generation of config.cmake and version.cmake files, make them
relocatable via CONFIGURE_PACKAGE_CONFIG_FILE (thx to J.V. Gomez)
- Enable rpath on OS X when the CMake version supports it (thx to J. Snape)
- Added version information to *-config.cmake files and exported targets to
CMakeLists.txt (thx to J. Snape)
- Improved CMake build by specifically targeting local includes (thx to
C.-E. Hrabia)

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- Disambiguated isnan (C++11)
- Fixed 123: Set root=NULL in clear()
- Fixed 131: Portable binary read/write of Pointcloud and ScanGraph (uint32_t)

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- Fixed 98: The tree structure in memory is now maintained in OcTreeBaseImpl to
enable safely deriving custom node classes. The following functions were
moved from OcTreeDataNode into OcTreeBaseImpl:
createChild(...) -> OcTreeBaseImpl::createNodeChild(...)
getChild(...) -> OcTreeBaseImpl::getNodeChild(...)
expandNode() -> OcTreeBaseImpl::expandNode(...)
pruneNode() -> OcTreeBaseImpl::pruneNode(...)
hasChildren() -> OcTreeBaseImpl::nodeHasChildren(...)
childExists(...) -> OcTreeBaseImpl::nodeChildExist(...)
collapsible() -> OcTreeBaseImpl::isNodeCollapsible(...)
If you use custom derived node classes, you need to adjust your code to the
new API (have a look at ColorOcTree.h as an example). In particular, you
should no longer use the above node member functions in your nodes.
- Extended unit tests for the new memory management
- Added valgrind memcheck suppression file with known ("wanted") leaks due to
StaticMemberInitializer.
- Replaced `unsigned short int` for key values with octomap::key_type
(=uint16_t) and unsigned char with uint8_t in API.
- Cleaned up OcTreeKey and KeyRay API (used internally)
- Reduced unneeded memory for StaticMemberInitializer
- Cleaned up const refs to primitive types in ColorOcTree interface
- Removed deprecated insertScan functions (replaced by insertPointCloud)
- Removed no longer used ROS logging macros and unmaintained OcTreeLUT,
OcTreeBaseSE classes
- octovis: Internal version of libQGLViewer updated to 2.6.3