[BUG] Change key word missing from project card bug

[DavidOry]

Describe the bug

Project card with changes key word is failing for single change

To Reproduce

See Python notebook here

Failing tests

• [ ] No applicable test failed, need to create.

Triggering line of code

Thoughts on resolution

Is the changes keyword needed when only one change is being made?

Full stack trace

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
<ipython-input-15-b45831b23b2d> in <module>
----> 1 build_scenario.apply_project(project.card_data)

c:\users\david.ory\documents\github\network_wrangler\network_wrangler\scenario.py in apply_project(self, p)
    531             for pc in p["changes"]:
    532                 pc["project"] = p["project"]
--> 533                 self.apply_project(pc)
    534 
    535         else:

c:\users\david.ory\documents\github\network_wrangler\network_wrangler\scenario.py in apply_project(self, p)
    537                 if not self.road_net:
    538                     raise ("Missing Roadway Network")
--> 539                 self.road_net.apply(p)
    540             if p["category"] in ProjectCard.TRANSIT_CATEGORIES:
    541                 if not self.transit_net:

c:\users\david.ory\documents\github\network_wrangler\network_wrangler\roadwaynetwork.py in apply(self, project_card_dictionary)
   1333                 _apply_individual_change(project_dictionary)
   1334         else:
-> 1335             _apply_individual_change(project_card_dictionary)
   1336 
   1337     def apply_python_calculation(

c:\users\david.ory\documents\github\network_wrangler\network_wrangler\roadwaynetwork.py in _apply_individual_change(project_dictionary)
   1309                 self.apply_roadway_feature_change(
   1310                     self.select_roadway_features(project_dictionary["facility"]),
-> 1311                     project_dictionary["properties"],
   1312                 )
   1313             elif project_dictionary["category"].lower() == "parallel managed lanes":

c:\users\david.ory\documents\github\network_wrangler\network_wrangler\roadwaynetwork.py in apply_roadway_feature_change(self, link_idx, properties, in_place)
   1387                 else:
   1388                     self.links_df.loc[link_idx, attribute] = (
-> 1389                         self.links_df.loc[link_idx, attribute] + p["change"]
   1390                     )
   1391             else:

KeyError: 'change'

Environment

Operating system: Context (conda, jupyter, etc): Jupyter Environment (e.g. output from conda list): Lasso develop branch, network_wrangler develop branch