Arcus Server 1.11.8

2019-11-20 [version 1.11.8]

* [FEATURE] Dump SM info summary when "no more small memory" occurs.
* [FEATURE] Print out not absolute but the remaining exptime in key dump.
* [FIX]     Fix memory leak when bad data is given in bop update.
* [ENHANCE] Increase SSL as free big slot and chunk space decreases.
* [ENHANCE] Change SM logic to alloc the smaller avail memory first.
* [ENHANCE] Use proper sized memory within engine to get coll elements.
* [ENHANCE] DO not increase refcount when allocate an element.
* [DOC]     Include contribution process document.
* [CLEANUP] Do lots of code refactoring.