--User changes

-Always force times of each flame to increase from zero when saving a file.
 -Remove check for times when doing a sequence in EmberGenome because the original times are never used there.

--Bug fixes
 -Multi-GPU synchronization was not actually thread safe and was likely doing less iters than requested. It is now properly synchronized.

--Code changes
 -Optimize Interpolater by making it a non-static class by adding some members used for caching values during interpolation.
 -Cache values in SheepTools as well, which was already a non-static class.
 -General cleanup.

Source/Ember/Utils.h

@@ -1028,6 +1028,26 @@ static vector<string> Split(const string& str, char del)
 	return vec;
 }
 
+/// <summary>
+/// Thin wrapper around joining a thread.
+/// </summary>
+/// <param name="th">The thread to join</param>
+static void Join(std::thread& th)
+{
+	if (th.joinable())
+		th.join();
+}
+
+/// <summary>
+/// Thin wrapper around joining a vector of threads.
+/// </summary>
+/// <param name="vec">The vector of threads to join</param>
+static void Join(std::vector<std::thread>& vec)
+{
+	for (auto& it : vec)
+		Join(it);
+}
+
 /// <summary>
 /// Return a character pointer to a version string composed of the EMBER_OS and EMBER_VERSION values.
 /// </summary>