Set autoprocess to True (#308)

Had another client who stubbed his toe on this.  Is there any reason not to change this default?

Author: madisonmay

indico/queries/datasets.py

@@ -438,7 +438,7 @@ class AddDatasetFiles(RequestChain):
         files (List[str]): List of pathnames to the dataset files
 
     Options:
-        autoprocess (bool, default=False): Automatically process new dataset files
+        autoprocess (bool, default=True): Automatically process new dataset files
         wait (bool, default=True): Block while polling for status of files
         batch_size (int, default=20): Batch size for uploading files
 
@@ -452,7 +452,7 @@ def __init__(
         self,
         dataset_id: int,
         files: List[str],
-        autoprocess: bool = False,
+        autoprocess: bool = True,
         wait: bool = True,
         batch_size: int = 20,
     ):