+=item configuration()
+
+Returns a hashref containing runtime configuration information. Contains these fields:
+
+=over
+
+=item base_path
+
+The base path to the Blërg database
+
+=item data_path
+
+The path under base_path for account data
+
+=item hash_tags_path
+
+The path under base_path for hashtag data
+
+=item ref_tags_path
+
+The path under base_path for mention data
+
+=back
+
+=back
+
+=head2 AUTHENTICATION
+
+=over
+
+=item auth_set_password(username, password)
+
+Sets the password for the given username. Returns 1 on success, 0 otherwise.
+
+=item auth_check_password(username, password)
+
+Checks the password for the given username. Returns 1 on successful
+authentication, 0 on failed authentication or error.
+
+=item auth_login(username, password)
+
+Authenticates and logs the user in. Returns the authentication token if
+successful, or undef on failure or error.
+
+=item auth_logout(username, token)
+
+Logs the given user out if the token represents a valid session. Returns 1 on
+success, or 0 on failure. Failure can happen if the token is no longer valid
+(meaning the user has been automatically logged out), so the return status is
+probably best ignored..
+
+=item auth_check_token(username, token)
+
+Checks that the token represents a valid session for the given username.
+Returns 1 if the session is valid, 0 otherwise. Also resets the expiration
+time of the session.
+
+=item auth_get_counter(username)
+
+Gets an opaque "counter" value for the auth information of the given username.
+This counter is changed every time the authentication information is changed,
+making it useful for protecting password changes against replay attacks.
+Returns a 32-bit integer on success, or undef on failure.
+