Update spglib to version 1.6.0.

Change-Id: Id7492866118760403cdd30a22547c77967ff70b3
Extend avospglib with access to all data about the spacegroup.

The getSpacegroup() functions are implemented using the new
getDataset() functions, but are retained for compatibility.

Change-Id: I375673728e51ced5da487e7e6bc55e5b58258cef
Add Spglib to OpenBabel conversion and use it for perception.

Change-Id: I3ca530d72c47a5f9b8073e4da097dd3802f0586f
Add mapping from Hall symbol or number to a spacegroup.

Change-Id: I04414c89f904f816fbb3d9c48d5c8b694224e544
Add reduceToAsymmetricUnit(), an inverse to fillUnitCell().

Change-Id: I6228246a320cc87398e21d684304b54d939748e3
Extend display of spacegroup properties with the Hall symbol.

Change-Id: Ic4587e4ee43b35e4a17dd765f0de020ae0fbb2b1
Fix the SetSpaceGroup call sites to use the Hall symbol.

The Set Spacegroup action is excepted as it will be changed
substantially

Change-Id: I37625706393ebc83d5110699b08118483101c00e
Extend Set Spacegroup action to allow selecting by Hall symbol.

Change-Id: Ieef9096a41ca4cbe2381624c524b391c20dfba84
Suggest symmetrization of cell when perceiving spacegroup.

Change-Id: I87c59eb619361dce8a8e00d57143967977ab55dd
Correctly preserve coordinates in orientStandard().

Change-Id: Ib0f59b23183d59d544a159548ebfa117fbc9b6de
Have a common setting for symmetry operation tolerance.

Also extends fillUnitCell() to honor this setting. This allows a user
who has been given an inaccurate unit cell to successfully use the
fill function without creating duplicate atoms. This is important
because this function is implicitly called by e.g. supercell builder.

Change-Id: Ifc0c8a175a20f39e9f33f731c1eb001d939bf7c8
Merge topic 'use-hall-symbols' into master

9fc55cce Have a common setting for symmetry operation tolerance.
4108a78a Correctly preserve coordinates in orientStandard().
a96d3054 Suggest symmetrization of cell when perceiving spacegroup.
ce70faba Extend Set Spacegroup action to allow selecting by Hall symbol.
e6d6474a Fix the SetSpaceGroup call sites to use the Hall symbol.
750f39e7 Extend display of spacegroup properties with the Hall symbol.
8fede26d Add reduceToAsymmetricUnit(), an inverse to fillUnitCell().
96525c14 Add mapping from Hall symbol or number to a spacegroup.
45674840 Add Spglib to OpenBabel conversion and use it for perception.
0b3c3be3 Extend avospglib with access to all data about the spacegroup.
c22a2d54 Update spglib to version 1.6.0.