Use orjson instead of json if available

libs/micropython/jwt.py

@@ -1,9 +1,13 @@
 import binascii
 import hashlib
 import hmac
-import json
 from time import time
 
+try:
+    import orjson as json
+except ImportError:
+    import json
+
 def _to_b64url(data):
     return (
         binascii.b2a_base64(data)

src/microdot/microdot.py

@@ -7,10 +7,14 @@ servers for MicroPython and standard Python.
 """
 import asyncio
 import io
-import json
 import re
 import time
 
+try:
+    import orjson as json
+except ImportError:
+    import json
+
 try:
     from inspect import iscoroutinefunction, iscoroutine
     from functools import partial

src/microdot/sse.py

@@ -1,7 +1,11 @@
 import asyncio
-import json
 from microdot.helpers import wraps
 
+try:
+    import orjson as json
+except ImportError:
+    import json
+
 
 class SSE:
     """Server-Sent Events object.

src/microdot/test_client.py

@@ -1,4 +1,3 @@
-import json
 from microdot.microdot import Request, Response, AsyncBytesIO
 
 try:
@@ -6,6 +5,11 @@ try:
 except:  # pragma: no cover  # noqa: E722
     WebSocket = None
 
+try:
+    import orjson as json
+except ImportError:
+    import json
+
 __all__ = ['TestClient', 'TestResponse']