sty: removed top-level import, fix log spacing

Author: mgxd

heudiconv/dicoms.py

@@ -4,7 +4,6 @@
 import logging
 from collections import OrderedDict
 import tarfile
-from nibabel.nicom import csareader
 from heudiconv.external.pydicom import dcm
 
 from .utils import SeqInfo, load_json, set_readonly

heudiconv/parser.py

@@ -186,7 +186,7 @@ def get_study_sessions(dicom_dir_template, files_opt, heuristic, outdir,
                                           "`infotoids` to heuristic file or "
                                           "provide `--subjects` option")
             lgr.warn("Heuristic is missing an `infotoids` method, assigning "
-                     "empty method and using provided subject id %s."
+                     "empty method and using provided subject id %s. "
                      "Provide `session` and `locator` fields for best results."
                      , sid)
             def infotoids(seqinfos, outdir):