Delay import of OPS (improves speed)

Author: dwhswenson

paths_cli/parameters.py

@@ -1,5 +1,5 @@
 import click
-import openpathsampling as paths
+# import openpathsampling as paths
 
 class AbstractParameter(object):
     def __init__(self, *args, **kwargs):
@@ -41,6 +41,7 @@ def __init__(self, param, mode):
         self.mode = mode
 
     def get(self, name):
+        import openpathsampling as paths
         return paths.Storage(name, mode=self.mode)