Added test for creating and destroying ops from parallel threads. Trying to get to the bottom of a bug somewhere but this apparently isn't it - no harm in having more test cases though.
Added test for creating and destroying ops from parallel threads. Trying to get to the bottom of a bug somewhere but this apparently isn't it - no harm in having more test cases though.

AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,tectronics/cortex-vfx,Alwnikrotikz/cortex-vfx,tectronics/cortex-vfx,tectronics/cortex-vfx,AlanZatarain/cortex-vfx