Adress Code scanning alerts

[robertcheramy]

• [X] I have read and understood docs/Issues.md.

Describe the bug Github currently lists 10 Code scanning alets. These are caused by regular expressions that could be optimized.

In Order to address these alerts properly, Model Simulation files will probably be needed.

Expected behavior All Alerts have been closed

Running environment (please complete the following information):

• oxidized version: git master