Add action function _v1 and _v2 commands to Python API

These commands can be used to check if the gien action is using the
"Solver Version" 1 or 2.

python/mmSolver/_api/action.py

@@ -32,10 +32,18 @@
 Action = collections.namedtuple('Action', ('func', 'args', 'kwargs'))
 
 
-def action_func_is_mmSolver(action):
+def action_func_is_mmSolver_v1(action):
     return _action_func_is_name(action, 'mmSolver')
 
 
+# For backwards compatibility.
+action_func_is_mmSolver = action_func_is_mmSolver_v1
+
+
+def action_func_is_mmSolver_v2(action):
+    return _action_func_is_name(action, 'mmSolver_v2')
+
+
 def action_func_is_camera_solve(action):
     return _action_func_is_name(action, 'camera_solve')
 

python/mmSolver/api.py

@@ -48,6 +48,8 @@
 from mmSolver._api.action import (
     Action,
     action_func_is_mmSolver,
+    action_func_is_mmSolver_v1,
+    action_func_is_mmSolver_v2,
     action_func_is_mmSolverAffects,
     func_str_to_callable,
     action_to_components,
@@ -407,6 +409,8 @@
     'generate_isolate_nodes',
     # Action
     'action_func_is_mmSolver',
+    'action_func_is_mmSolver_v1',
+    'action_func_is_mmSolver_v2',
     'action_func_is_mmSolverAffects',
     'func_str_to_callable',
     'action_to_components',