Version 2.0.0 prerelease
Version 2.1.0 beta
Bug fixes
Bug fixes
Various changes
Merge remote-tracking branch 'upstream/master'

Conflicts:
	openvdb/version.h
Asynchronous IO and various improvements.
Version 2.1.0
various fixes
Various improvements.
various fixes
Merge remote-tracking branch 'upstream/master'

Conflicts:
	openvdb/Makefile
	openvdb/version.h
Remove obsolete usage of register keyword for C++11 compliance
Changes for C++11 compliance