Fix examples (#457)

Fix the readme example to be runnable + minor fixes to satisfy mypy

README.md

@@ -9,21 +9,24 @@ See the [github project](https://github.com/allenporter/pyrainbird).
 
 This is an example usage to get the current irrigation state for all available
 irrigation zones:
-```
+```python
+import asyncio
 import aiohttp
 from pyrainbird import async_client
 
-async with aiohttp.ClientSession() as client:
-    controller: AsyncRainbirdController = async_client.CreateController(
-        client,
-        "192.168.1.1",
-        "password"
-    )
-    zones = await controller.get_available_stations()
-    states = await controller.get_zone_states()
-    for zone in zones:
-        if zone in states.active_set:
-            print("Sprinkler zone {zone} is active")
+async def main() -> None:
+    async with aiohttp.ClientSession() as client:
+        controller: async_client.AsyncRainbirdController = async_client.CreateController(
+            client,
+            "192.168.1.1",
+            "password"
+        )
+        zones = await controller.get_available_stations()
+        states = await controller.get_zone_states()
+        for zone in zones.active_set:
+            print(f"Sprinkler zone {zone}: {"active" if zone in states.active_set else "inactive"}")
+
+asyncio.run(main())
 ```
 
 See [examples](examples/) for additional details on how to use the APIs and an example command

examples/mitm_rainbird.py

@@ -13,6 +13,7 @@
 from mitmproxy import contentviews, flow, http
 
 import pyrainbird
+import pyrainbird.encryption
 from pyrainbird import rainbird
 
 
@@ -79,6 +80,7 @@ def render_priority(
             return 0
         if content_type != "application/octet-stream":
             return 0
+        assert isinstance(flow, http.HTTPFlow)
         if flow.request:
             if "/stick" in flow.request.path:
                 return 1

pyrainbird/data.py

@@ -79,10 +79,10 @@ class ModelAndVersion:
     model: int
     """The device model number hex code."""
 
-    major: str
+    major: int
     """The major version string."""
 
-    minor: str
+    minor: int
     """The minor version string."""
 
     @property