1.4.0rc3

* FIX: Check for ``in_segm`` input, not ``seg_file`` (typo) (#592)
* FIX: Use the mask to calculate FOV rather than the fixed image in ``GenerateSamplingReference`` (#583)
* FIX: Allow omission of ``<res>`` for template normalization (#582)
* FIX: Include ``_T2starw`` ``_MTw`` and ``_TSE``-suffixes in ``build_path`` options (#584)
* FIX: ``DerivativesDataSink`` warning when it has multiple source files (#573)
* ENH: Revise some patterns of the ``BIDSLayout`` config to aid *SDCFlows*' new API (#585)
* ENH: Upstream *fMRIPrep*'s ``init_bbreg_wf`` to integrate it in *dMRIPrep* (#586)
* MAINT: Drop Python 3.6, test ``setuptools`` builds, ``pip`` installations, and revise Docker pinned versions (#593)
* MAINT: CircleCI housekeeping (#580)