Common update:

-added multiple new function to allocate template and add entity
-updated README.md (complete initial version)
-empty components now don't take memory
-fixedd small bug with TestRunner
-added many new tests (HashMap, Vector, EntityMeta, ...)
-added default hashing function to HashMap
-fixed critical bug with adding entities
-fixed small bug with adding entity with remplacement components
-added asserts into code to better bug detection
-small performance improvement for events
-added ComponentRef structure which contain data pointer and componentID
-remove EntityID from Event structure
-now events are handled before removing entiteis
-fixed GDC compilation
-fixed rendering of rotated sprites
-added weapons as separate entities to space ship and others
-added Tower enemy to SpaceInvaders demo
-added Boss to SpaceInvaders demo (boss has four tower attached to it)
-Boss towers shoot multiple bullets upon death
-fixed critical bug with demos switching
-fixed critical bug related to adding/removing entities form inside onAdd/onRemove entity callback
-added animation support
-added particles sypport and particles for firing and explostions, and more
-multithreaded rendering now has same rendering order as singlethreaded
-application automaticallu detect host CPU threads count
-added upgrades to SPaceInvaders demo
-fixed texture memory freeing
-improved documentation
-improved multithreaded performance
-improve shader code
-fixed registration issue
-some additional performance improvements
-added depth and colors to rendering parameters
-jobs now has names corresponding to their systems
-change execute() -> willExecute()
-added EntityMeta structure to speedup getting fetching components form entity
-improved multithreading rendering
-added possibility tio change number of threads runtime
-added bullets collision detection in SpaceInvaders demo
-some CI changes
-added VBO batch rendering (current default, no render mode switch yet)
-fixed camera positioning calculation
-fixed buffer issue with WebGL
-added viewport scalling (at least 300 pixels height). Pixels are scalled if screen is bigger.
-center demos gameplay area
-added fullpage html template for Emscripten build
-added many new sprites to atlas
-fixed critical bug with CPU usage in multithreaded mode
-snake render tile coresponding to body part
-snake is destroyed after collision and emit some particles
-added some functionality to vectors
-fixed documentation issue in Manager.d
-more minor code changes and cleanup

tests/time.d

@@ -0,0 +1,66 @@
+module tests.time;
+
+
+version (WebAssembly)
+{
+	alias int time_t;
+	alias int clockid_t;
+	enum CLOCK_REALTIME = 0;
+
+	struct timespec
+	{
+		time_t tv_sec;
+		int tv_nsec;
+	}
+
+	extern (C) int clock_gettime(clockid_t, timespec*) @nogc nothrow @system;
+
+	struct Time
+	{
+		static long getUSecTime()
+		{
+			time_t time;
+			timespec spec;
+
+			clock_gettime(CLOCK_REALTIME, &spec);
+
+			//time = spec.tv_sec;
+			return spec.tv_sec * 1000_000 + spec.tv_nsec / 1000; //time / 1000_000;
+		}
+	}
+}
+else version (Windows)
+{
+	import core.stdc.stdio : printf;
+	import core.sys.windows.windows;
+
+	struct Time
+	{
+		static long getUSecTime()
+		{
+			LARGE_INTEGER time, freq;
+			QueryPerformanceFrequency(&freq);
+			QueryPerformanceCounter(&time);
+			return time.QuadPart / (freq.QuadPart / 1000_000);
+		}
+	}
+}
+else version (Posix)
+{
+	import core.stdc.stdio : printf;
+	import core.sys.posix.time;
+
+	struct Time
+	{
+		static long getUSecTime()
+		{
+			time_t time;
+			timespec spec;
+
+			clock_gettime(CLOCK_REALTIME, &spec);
+
+			//time = spec.tv_sec;
+			return spec.tv_sec * 1000_000 + spec.tv_nsec / 1000; //time / 1000_000;
+		}
+	}
+}