handling of .env file sometimes hardcodes file location to user's home directory

[tcj]

I'm going spare on the specifics right now — but there are cases where this client will only read/honor the .env file that is in the user's home directory, rather than following the normal logic dotenv provides.

[tcj]

I believe this also complicates the 'custom token' handling, which is itself represented by another currently-open issue.

[tcj]

note: the pattern I'm speaking of (which is not used in pysofar, or is bypassed) is load_dotenv(find_dotenv())