GUI: multiline textbox; redirected error stream of script compiler
GUI: cursor in textbox
destructors for: Event, Mutex, Semaphore, SpinMutex are now private/protected. (closes #59)
Merge pull request #76 from nem0/multithread_refactor

destructors for: Event, Mutex, Semaphore, SpinMutex are now private/prot...
Merge pull request #71 from nem0/gui

additional GUI features and redirected error stream of script compiler
editor_native/main.cpp refactored
divider in dockable keeps relative position when parent block is resized
string::operator +=: memory allocation fixed; GUI textbox: text is inserted at the position of the cursor; edit script button in the native editor
Merge remote-tracking branch 'remotes/origin/master' into fs_refactor

Conflicts:
	projects/core/core.vcxproj.filters
	src/core/pc/spin_mutex.cpp