Update release notes for 0.11.2.
Update release notes for 0.11.2.

Crowndev/crowncoin,domob1812/crowncoin,domob1812/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,Infernoman/crowncoin,Crowndev/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,Crowndev/crowncoin,Infernoman/crowncoin,domob1812/crowncoin,domob1812/crowncoin,Crowndev/crowncoin