* feat: add support for case insensitive env names
Closes#277
* feedback: just alias os.environ
* doc: update history
* doc: mention case_insensitive option
* refactor: feedback if-else expression assignment
* fix: formatting
* chore: encode black configuration in file to support IDEs
* docs: fix example
* feedback: no suppport for IDEs in this PR
* feedback: style
Jason Kuhrt