Fixed critical issue that lead to deletion of non-empty domain router

+ Upgraded version to 1.3.0 & added version constant

aiohttp_dynamic/__init__.py

@@ -15,3 +15,5 @@
 # import public classes
 from .routing import AbstractPathRouter, PlainPathRouter, DynamicPathRouter, DomainRouter, DynamicRouter, Handler
 from .middlewares import DynamicMiddleware
+
+VERSION = '1.3.0'

aiohttp_dynamic/routing.py

@@ -881,7 +881,7 @@ def del_handler(self, method: str, path: str, domain: str = '*') -> bool:
 						domain_router.del_router(path)
 
 					# Try to remove empty domain router
-					if len(domain_router.routes):
+					if len(domain_router.routes) == 0:
 						self.del_domain(domain)
 
 					return True

setup.py

@@ -3,7 +3,7 @@
 setup(
 	name = 'aiohttp_dynamic',
 	packages = ['aiohttp_dynamic'],
-	version = '1.2.0',
+	version = '1.3.0',
 	license='Apache License 2.0',
 	description = 'aiohttp extension for creating and modifying dynamic routes in runtime',
 	author = 'bitrate16',