cmake: Set version number to 0.2.0.
cmake: Set version number to 0.2.0.

chadversary/cmocka,JonathonReinhart/cmocka,Odie/cmocka,nuumio/cmocka,dsch/cmocka,VladimirTyrin/cmocka,clibs/cmocka,wingyplus/cmocka,jhrozek/cmocka,clibs/cmocka,jschmidlapp/cmocka,lsjostro/cmocka,jamesmunns/CMocka,chadversary/cmocka,nuumio/cmocka,linuxmaniac/cmocka,Odie/cmocka,VladimirTyrin/cmocka,Odie/cmocka,jhrozek/cmocka,jamesmunns/CMocka,nuumio/cmocka,linuxmaniac/cmocka,aleksandr-vin/cmock,tyc/cmocka,dsch/cmocka,jschmidlapp/cmocka,jschmidlapp/cmocka,JonathonReinhart/cmocka,tyc/cmocka,lsjostro/cmocka,jhrozek/cmocka,tyc/cmocka,aleksandr-vin/cmock,wingyplus/cmocka