Expose transaction api

api/__init__.py

@@ -5,7 +5,7 @@ from .project import copy_project
 from .operation import execute_undo as undo
 from .operation import execute_redo as redo
 from .operation import have_snapshot, take_snapshot, pick_snapshot
-from .operation import have_transaction, start_transaction, commit_transaction, rollback_transaction
+from .operation import have_transaction, start_transaction, commit_transaction, abort_transaction
 
 from .s0_base import is_node, is_junction, is_reservoir, is_tank
 from .s0_base import is_link, is_pipe, is_pump, is_valve

api/operation.py

@@ -202,7 +202,7 @@ def commit_transaction(name: str) -> None:
 
     _remove_transaction(name)
 
-def rollback_transaction(name: str) -> None:
+def abort_transaction(name: str) -> None:
     tran = _get_current_transaction_id(name)
     if tran >= 0:
         print("No active transaction!")