Update min version of requests-ratelimiter and update type hints for …

…rate limit args (per_*)

Updates #535

docs/user_guide/advanced.md

@@ -85,6 +85,11 @@ For example, to reduce the rate to 50 requests per minute:
 >>> get_taxa(q='warbler', locale=1, session=session)
 ```
 
+Float values also work, for example to slow it down to less than 1 request per second):
+```python
+>>> session = ClientSession(per_second=0.5)
+```
+
 ### Distributed Application Rate Limiting
 The default rate-limiting backend is thread-safe, and persistent across application restarts. If
 you have a larger application running from multiple processes, you will need an additional locking

pyinaturalist/session.py

@@ -82,8 +82,8 @@ def __init__(
         cache_control: bool = True,
         expire_after: Optional[ExpirationTime] = None,
         urls_expire_after: Optional[ExpirationPatterns] = None,
-        per_second: int = REQUESTS_PER_SECOND,
-        per_minute: int = REQUESTS_PER_MINUTE,
+        per_second: float = REQUESTS_PER_SECOND,
+        per_minute: float = REQUESTS_PER_MINUTE,
         per_day: float = REQUESTS_PER_DAY,
         burst: int = REQUEST_BURST_RATE,
         bucket_class: Type[AbstractBucket] = SQLiteBucket,

pyproject.toml

@@ -48,7 +48,7 @@ python-dateutil             = ">=2.0"
 python-forge                = ">=18.6"
 requests                    = ">=2.25"
 requests-cache              = ">=1.1"
-requests-ratelimiter        = ">=0.3.2"
+requests-ratelimiter        = ">=0.5"
 rich                        = ">=10.9"
 
 # Optional dependencies