ENH: warn instead of raise violated rules (#224)

* ENH: pass execution info through `RuntimeError`

src/qrules/transition.py

@@ -2,6 +2,7 @@
 
 import logging
 import re
+import warnings
 from collections import abc, defaultdict
 from copy import copy, deepcopy
 from enum import Enum, auto
@@ -613,10 +614,11 @@ def find_solutions(  # noqa: C901, PLR0912
             for rules in execution_info.violated_node_rules.values():
                 violated_rules |= rules
             if violated_rules:
-                raise RuntimeError(
+                msg = (
                     "There were violated conservation rules: "
-                    + ", ".join(violated_rules)
+                    f" {', '.join(violated_rules)}"
                 )
+                warnings.warn(msg, category=RuntimeWarning, stacklevel=1)
         if (
             final_result.execution_info.not_executed_edge_rules
             or final_result.execution_info.not_executed_node_rules
@@ -626,13 +628,14 @@ def find_solutions(  # noqa: C901, PLR0912
                 not_executed_rules |= rules
             for rules in execution_info.not_executed_node_rules.values():
                 not_executed_rules |= rules
-            raise RuntimeWarning(
-                "There are conservation rules that were not executed: "
-                + ", ".join(not_executed_rules)
+            msg = (
+                "There are conservation rules that were not executed:"
+                f" {', '.join(not_executed_rules)}"
             )
+            warnings.warn(msg, category=RuntimeWarning, stacklevel=1)
         if not final_solutions:
             msg = "No solutions were found"
-            raise ValueError(msg)
+            raise RuntimeError(msg, execution_info)
 
         match_external_edges(final_solutions)
         final_solutions = [