v0.10.8

CSV v0.10.8

Diff since v0.10.7

Closed issues:

• UndefVarError: writeshortest not defined on CSV.write (#1056)
• Design of clear_task_threads (#1057)

Merged pull requests:

• Only clear thread states if we're the root task (#1050) (@quinnj)
• Use SnoopPrecompile for precompilation (#1051) (@quinnj)
• Use WeakRefs for spawned tasks to avoid holding unexpected references (#1058) (@quinnj)