added in micropython external library for const feature.

it's returing valid attribute arrays, that just need converted on z2m
side.

it's also respecting the stop command from the console, which I will
attempt to expose as just a button press.

venv/Lib/site-packages/dotenv/__init__.py

@@ -0,0 +1,49 @@
+from typing import Any, Optional
+
+from .main import (dotenv_values, find_dotenv, get_key, load_dotenv, set_key,
+                   unset_key)
+
+
+def load_ipython_extension(ipython: Any) -> None:
+    from .ipython import load_ipython_extension
+    load_ipython_extension(ipython)
+
+
+def get_cli_string(
+    path: Optional[str] = None,
+    action: Optional[str] = None,
+    key: Optional[str] = None,
+    value: Optional[str] = None,
+    quote: Optional[str] = None,
+):
+    """Returns a string suitable for running as a shell script.
+
+    Useful for converting a arguments passed to a fabric task
+    to be passed to a `local` or `run` command.
+    """
+    command = ['dotenv']
+    if quote:
+        command.append('-q %s' % quote)
+    if path:
+        command.append('-f %s' % path)
+    if action:
+        command.append(action)
+        if key:
+            command.append(key)
+            if value:
+                if ' ' in value:
+                    command.append('"%s"' % value)
+                else:
+                    command.append(value)
+
+    return ' '.join(command).strip()
+
+
+__all__ = ['get_cli_string',
+           'load_dotenv',
+           'dotenv_values',
+           'get_key',
+           'set_key',
+           'unset_key',
+           'find_dotenv',
+           'load_ipython_extension']