fix coreversion info and add docs

Author: psifertex

docs/dev/cookbook.md

@@ -375,6 +375,32 @@ context = FileContext(data.file, data, '')
 execute_on_main_thread(lambda: UIContext.activeContext().openFileContext(context))
 ```
 
+## Version Checking
+
+### Checking Binary Ninja version
+
+Plugins often need to check the Binary Ninja version to ensure compatibility or conditionally enable features. Use [`core_version_info()`](https://api.binary.ninja/#binaryninja.core_version_info) and [`CoreVersionInfo`](https://api.binary.ninja/#binaryninja.CoreVersionInfo) for clean version comparisons:
+
+```python
+from binaryninja import core_version_info, CoreVersionInfo
+
+# Check minimum version requirement
+if core_version_info() >= CoreVersionInfo(5, 1, 8104):
+    # Use API only available in 5.1.8104 and later
+    print("New API is available")
+else:
+    # Fall back to older API
+    print("Using legacy API")
+
+# Parse and compare against a version string
+if core_version_info() >= CoreVersionInfo("4.2.0"):
+    print("Version 4.2.0 or later detected")
+
+# Access individual version components
+version = core_version_info()
+print(f"Running Binary Ninja {version.major}.{version.minor}.{version.build}-{version.channel}")
+```
+
 ## Debuging & Logging
 
 ### Logging

python/__init__.py

@@ -127,6 +127,19 @@ class CoreVersionInfo:
 	Structure representing the Binary Ninja Version.
 
 	Use :py:func:`core_version_info` to look up the current version of Binary Ninja loaded.
+
+	:Example:
+
+		>>> from binaryninja import core_version_info, CoreVersionInfo
+		>>> # Check if the current version meets minimum requirements for a plugin
+		>>> if core_version_info() >= CoreVersionInfo(5, 1, 8104):
+		...     print("Using new API available in 5.1.8104 and later")
+		>>> # Parse and compare against a version string
+		>>> if core_version_info() >= CoreVersionInfo("4.2.0"):
+		...     print("Version 4.2.0 or later detected")
+		>>> # Get individual version components
+		>>> version = core_version_info()
+		>>> print(f"Running Binary Ninja {version.major}.{version.minor}.{version.build}")
 	"""
 
 	major: int
@@ -151,7 +164,7 @@ def __init__(self, major, minor = None, build = None, channel = None):
 			self.major = core_version_info.major
 			self.minor = core_version_info.minor
 			self.build = core_version_info.build
-			if core_version_info.channel is not None:
+			if core_version_info._channel is not None:
 				self.channel = core_version_info.channel
 		else:
 			self.major = major