flake8 tests, setuptools upgrade and readme update

README.md

@@ -26,6 +26,11 @@ In case the logs failed to be sent to Logz.io after a couple of tries, they will
 pip install logzio-python-handler
 ```
 
+If you'd like to use [Trace context](https://github.com/logzio/logzio-python-handler#trace-context) then you need to install the OpenTelemetry logging instrumentation dependecy by running the following command:
+
+```bash
+pip install logzio-python-handler[opentelemetry-logging]
+```
 ## Tested Python Versions
 Travis CI will build this handler and test against:
   - "3.5"
@@ -33,6 +38,8 @@ Travis CI will build this handler and test against:
   - "3.7"
   - "3.8"
   - "3.9"
+  - "3.10"
+  - "3.11"
 
 We can't ensure compatibility to any other version, as we can't test it automatically.
 
@@ -216,6 +223,12 @@ LOGGING = {
 
 If you're sending traces with OpenTelemetry instrumentation (auto or manual), you can correlate your logs with the trace context.
 That way, your logs will have traces data in it, such as service name, span id and trace id.
+
+Make sure to install the OpenTelemetry logging instrumentation dependecy by running the following command:
+
+```bash
+pip install logzio-python-handler[opentelemetry-logging]
+```
 To enable this feature, set the `add_context` param in your handler configuration to `True`, like in this example:
 
 ```python

logzio/handler.py

@@ -34,7 +34,10 @@ class LogzioHandler(logging.Handler):
                 from opentelemetry.instrumentation.logging import LoggingInstrumentor
                 LoggingInstrumentor().instrument(set_logging_format=True)
             except ImportError:
-                print("Can't add trace context. OpenTelemetry logging optional package isn't installed.\nPlease install the following:\npip install 'logzio-python-handler[opentelemetry-logging]'")
+                print("""Can't add trace context.
+OpenTelemetry logging optional package isn't installed.
+Please install the following package:
+pip install 'logzio-python-handler[opentelemetry-logging]'""")
         self.logzio_sender = LogzioSender(
             token=token,
             url=url,

logzio/sender.py

@@ -9,7 +9,6 @@ from threading import Thread, enumerate
 
 import requests
 
-from .logger import get_logger
 from .logger import get_stdout_logger
 
 if sys.version[0] == '2':

requirements.txt

@@ -1,3 +1,3 @@
 requests>=2.27.0
 protobuf>=3.20.2
-setuptools>=65.5.1  # not directly required, pinned by Snyk to avoid a vulnerability
+setuptools>=68.0.0  # not directly required, pinned by Snyk to avoid a vulnerability