Massive speed increase. Added latent caching both to disk and to memory

toolkit/progress_bar.py

@@ -0,0 +1,22 @@
+from tqdm import tqdm
+import time
+
+
+class ToolkitProgressBar(tqdm):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.paused = False
+
+    def pause(self):
+        if not self.paused:
+            self.paused = True
+            self.last_time = self._time()
+
+    def unpause(self):
+        if self.paused:
+            self.paused = False
+            self.start_t += self._time() - self.last_time
+
+    def update(self, *args, **kwargs):
+        if not self.paused:
+            super().update(*args, **kwargs)