rename ratelimit decorator to script_ratelimit for clarity

script_ratelimit now defaults to None.

add note in README

vban_cmd/factory.py

@@ -89,7 +89,7 @@ class FactoryBase(VbanCmd):
             'streamname': 'Command1',
             'bps': 256000,
             'channel': 0,
-            'script_ratelimit': 0.05,  # 20 commands per second, to avoid overloading Voicemeeter
+            'script_ratelimit': None,  # if None or 0, no rate limit applied to script commands
             'timeout': 5,  # timeout on socket operations, in seconds
             'disable_rt_listeners': False,
             'sync': False,

vban_cmd/util.py

@@ -5,12 +5,12 @@ from typing import Iterator
 from .error import VBANCMDConnectionError
 
 
-def ratelimit(func):
-    """ratelimit decorator for {VbanCmd}.sendtext, to prevent flooding the network with script requests."""
+def script_ratelimit(func):
+    """script_ratelimit decorator for {VbanCmd}.sendtext, to prevent flooding the network with script requests."""
 
     def wrapper(*args, **kwargs):
         self, *rem = args
-        if self.script_ratelimit > 0:
+        if self.script_ratelimit:
             now = time.time()
             elapsed = now - self._last_script_request_time
             if elapsed < self.script_ratelimit: