Merge branch 'master' into deprecate_detpmp

# Conflicts:
#	README.md
#	alr_envs/alr/__init__.py

alr_envs/dmc/dmc_wrapper.py

@@ -15,10 +15,10 @@ def _spec_to_box(spec):
         assert s.dtype == np.float64 or s.dtype == np.float32, f"Only float64 and float32 types are allowed, instead {s.dtype} was found"
         dim = int(np.prod(s.shape))
         if type(s) == specs.Array:
-            bound = np.inf * np.ones(dim, dtype=np.float32)
+            bound = np.inf * np.ones(dim, dtype=s.dtype)
             return -bound, bound
         elif type(s) == specs.BoundedArray:
-            zeros = np.zeros(dim, dtype=np.float32)
+            zeros = np.zeros(dim, dtype=s.dtype)
             return s.minimum + zeros, s.maximum + zeros
 
     mins, maxs = [], []
@@ -29,7 +29,7 @@ def _spec_to_box(spec):
     low = np.concatenate(mins, axis=0)
     high = np.concatenate(maxs, axis=0)
     assert low.shape == high.shape
-    return spaces.Box(low, high, dtype=np.float32)
+    return spaces.Box(low, high, dtype=s.dtype)
 
 
 def _flatten_obs(obs: collections.MutableMapping):
@@ -113,7 +113,7 @@ class DMCWrapper(core.Env):
             if self._channels_first:
                 obs = obs.transpose(2, 0, 1).copy()
         else:
-            obs = _flatten_obs(time_step.observation)
+            obs = _flatten_obs(time_step.observation).astype(self.observation_space.dtype)
         return obs
 
     @property