implement cache drop

corrlib/cli.py

@@ -6,6 +6,7 @@ from .toml import import_tomls, update_project, reimport_project
 from .find import find_record, list_projects
 from .tools import str2list
 from .main import update_aliases
+from .meas_io import drop_cache as mio_drop_cache
 import os
 
 app = typer.Typer()
@@ -157,6 +158,21 @@ def init(
     return
 
 
+@app.command()
+def drop_cache(
+    path: str = typer.Option(
+        str('./corrlib'),
+        "--dataset",
+        "-d",
+    ),
+) -> None:
+    """
+    Drop the currect cache directory of the dataset.
+    """
+    mio_drop_cache(path)
+    return
+
+
 @app.callback()
 def main(
     version: Optional[bool] = typer.Option(