fix for #109 with unit test
fix for #113
improved singleton z handling, removed possible deadlock
more abstraction to acommodate lazy CC
Merge branch 'master' into OpLabelVolume-optimization
Merge branch 'master' into OpLabelVolume-optimization
make sure the 'right' blockedarray version is used
make sure the 'right' blockedarray version is used (for tests)
Merge branch 'master' into OpLabelVolume-optimization
Merge branch 'master' into OpLabelVolume-optimization
made OpNonLazyCC interface public
use new blockedarray
Merge branch 'master' into OpLabelVolume-optimization
Merge pull request #127 from burgerdev/OpLabelVolume-optimization

OpLabelVolume optimization
Merge pull request #114 from burgerdev/issue-113

fix for #113
Merge pull request #110 from burgerdev/issue-109

fix for #109 with unit test
OpCompressedUserLabelArray: Don't complain about changing blockshape unless we've already started allocating blocks.
Deleted submodule dvidclient, which will be renamed.
Added submodule: pydvid
Updated dvid-related files for refactored pydvid submodule.