Open tech debt from recent commits

[stleary]

Tech debt from recent merges

• DONE: Refactoring: Fix sonarQube issues in JSONObject #1005: https://sonarcloud.io/project/issues?id=stleary_JSON-java&pullRequest=1005&issueStatuses=OPEN,CONFIRMED&sinceLeakPeriod=true
• Refactoring: Fix sonarQube issues in JSONObject #1005 (comment)
• Refactoring: Fix sonarQube issues in JSONObject #1005 (comment)
• Refactoring: Fix sonarQube issues in JSONObject #1005 (comment)

Approved but not merged yet:

• https://sonarcloud.io/summary/new_code?id=stleary_JSON-java&pullRequest=1009
• Fix strict mode check for period after number #1009 (comment)

#1009: Unit tests needed

• Fixed JSONArray strict mode check for leading comma #1008 (comment)