version++
created new class for thread
multithreaded GC

now we can do garbage collector things on background without having to
interrupt the main thread
I totally forgot to add these c++ files
Merge pull request #65 from huggle/gc

Gc
enhanced gc
inserted hewiki to default list
gitignore .pro.user [ci skip]
explicit add spacing to some preference options

designer shows spacing and also in properties but exe not. Must be explicit set.