drop support for python 3.5 :)

Author: jxmorris12

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.5, 3.6, 3.7, 3.8]
+        python-version: [3.6, 3.7, 3.8]
 
     steps:
     - uses: actions/checkout@v2

README.md

@@ -153,7 +153,7 @@ The default download path is `~/.cache/language_tool_python/`. The LanguageTool
 
 ## Prerequisites
 
-- [Python 3.5+](https://www.python.org)
+- [Python 3.6+](https://www.python.org)
 - [LanguageTool](https://www.languagetool.org) (Java 8.0 or higher)
 
 

language_tool_python/server.py

@@ -25,7 +25,7 @@
 
 # Keep track of running server PIDs in a global list. This way,
 # we can ensure they're killed on exit.
-RUNNING_SERVER_PROCESSES = []
+RUNNING_SERVER_PROCESSES: List[subprocess.Popen] = []
 
 class LanguageTool:
     """Main class used for checking text against different rules. 

setup.py

@@ -7,7 +7,7 @@
 
 setup(
     name='language_tool_python',
-    version='2.6.3',
+    version='2.6.4',
     description='Checks grammar using LanguageTool.',
     long_description_content_type='text/markdown',
     long_description=long_description,