=========================
Bug-fix release in the 21.0.x series.
This release re-enables reverse-PE EPI fieldmaps, i.e. EPIs acquired with the
opposite phase-encoding direction to a BOLD series.
Additionally, the ``--use-syn-sdc`` option will now error by default if no
``PhaseEncodingDirection`` can be found for a BOLD series. To reduce this to
a warning, use ``--use-syn-sdc warn``. SyN-SDC will NOT be run, but the workflow
will proceed.
.. note::
``topup`` runtime scales with the number of volumes used, so fMRIPrep defaults to
using a maximum of 5 volumes from each of the BOLD series and the EPI fieldmap.
To adjust this, please use the ``--topup-max-vols`` parameter.
* FIX: Create single fmap_select_std node for use with all ANAT estimators (2692)
* FIX: Re-enable reverse-PE EPI fieldmaps (2684)
* FIX: Pass boolean use_syn_sdc to find_estimators (2685)
* FIX: Ensure AROMA inputs are uncompressed if --low-mem (2657)
* ENH: Add ``--topup-max-vols`` flag to control TOPUP runtime (2688)
* ENH: Allow ``--use-syn-sdc`` to take a "warn" option to avoid exiting when PE dir is unavailable (2680)
* RF: Add extension field to differentiate from upcoming templates (2613)
* WRAPPER: Map ``--bids-filter-file``\s into Docker container (2691)
* MNT: Silence warning from pybids; list packaging as dependency (2689)
* MNT: Add netbase to Docker image to ensure correct datalad operation (2682)
* MNT: Restore nitime to requirements, necessary for DVARS (2678)