Add CODE_OF_CONDUCT.md (#897)

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 -   Integration tests via GHA (non-user endpoints)
 -   Unit tests for new releases, passing limit parameter with minimum and maximum values of 1 and 50
 -   Unit tests for categories, omitting country code to test global releases
+-   Added 'CODE_OF_CONDUCT.md'
 
 ### Fixed
 

CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+Here at Spotipy, we would like to promote an environment which is open and 
+welcoming to all. As contributors and maintainers we want to guarantee an 
+experience which is free of harassment for everyone. By everyone, we mean everyone, 
+regardless of: age, body size, disability, ethnicity, sex characteristics, gender 
+identity and expression, level of experience, education, socio-economic status, 
+nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Here are some examples of conduct which we believe is conducive to and contributes 
+to a positive environment:
+
+* Use of welcoming and inclusive language
+* Giving due respect to differing viewpoints and experiences
+* Being accepting of constructive criticism
+* Being focused on what is best for the community
+* Displaying empathy towards other members of the community
+
+Here are some examples of conduct which we believe are unacceptable:
+
+* Using sexualized language/imagery or giving other community members unwelcome 
+  sexual attention
+* Making insulting/derogatory comments to other community members, or making 
+  personal/political attacks against other community members
+* Trolling
+* Harassing other members publicly or privately
+* Doxxing other community members (leaking private information without first getting consent)
+* Any other behavior which would be considered inappropriate in a professional setting
+
+## Our Responsibilities
+
+As project maintainers, we are responsible for clearly laying out standards for proper 
+conduct. We are also responsible for taking the appropriate actions if and when a 
+community member does not act with proper conduct. An example of appropriate action 
+is removing/editing/rejecting comments/commits/code/wiki edits/issues or other 
+contributions made by such an offender. If a community members continues to act in a 
+way contrary to the Code of Conduct, it is our responsibility to ban them (temporarily 
+or permanently). 
+
+## Scope
+
+Community members are expected to adhere to the Code of Conduct within all project spaces, 
+as well as in all public spaces when representing the Spotipy community.
+
+## Enforcement
+Please report instances of abusive, harassing, or otherwise unacceptable behavior to us. 
+All complaints will be investigated and reviewed by the project team and will result in 
+an appropriate response. The project team is obligated to maintain confidentiality with 
+regard to the reporter of an incident.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good faith may 
+face temporary or permanent repercussions as determined by other members of the project’s 
+leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the Contributor Covenant, version 1.4, available at 
+https://www.contributor-covenant.org/version/1/4/code-of-conduct.html. For answers to 
+common questions about this code of conduct, see https://www.contributor-covenant.org/faq