Fiona

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- New binary wheels using version 1.2.0 of sgillies/frs-wheel-builds. See
https://github.com/sgillies/frs-wheel-builds/blob/master/CHANGES.txt.

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Bug Fixes:

- Prevent Fiona from stumbling over 'Z', 'M', and 'ZM' geometry types
introduced in GDAL 2.1 (384). Fiona 1.7.1 doesn't add explicit support for
these types, they are coerced to geometry types 1-7 ('Point', 'LineString',
etc.)
- Raise an `UnsupportedGeometryTypeError` when a bogus or unsupported
geometry type is encountered in a new collection's schema or elsewhere
(340).
- Enable `--precision 0` for fio-cat (370).
- Prevent datetime exceptions from unnecessarily stopping collection iteration
by yielding `None` (385)
- Replace log.warn calls with log.warning calls (379).
- Print an error message if neither gdal-config or `--gdalversion` indicate
a GDAL C API version when running `setup.py` (364).
- Let dict-like subclasses through CRS type checks (367).

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Packaging: define extension modules for 'clean' and 'config' targets (363).

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Packaging: No files are copied for the 'clean' setup target (361, 362).

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The C extension modules in this library can now be built and used with either
a 1.x or 2.x release of the GDAL library. Big thanks to René Buffat for
leading this effort.

Refactoring:

- The `ogrext1.pyx` and `ogrext2.pyx` files now use separate
C APIs defined in `ogrext1.pxd` and `ogrex2.pxd`. The other extension
modules have been refactored so that they do not depend on either of these
modules and use subsets of the GDAL/OGR API compatible with both GDAL 1.x and
2.x (359).

Packaging:

- Source distributions now contain two different sources for the
`ogrext` extension module. The `ogrext1.c` file will be used with GDAL 1.x
and the `ogrext2.c` file will be used with GDAL 2.x.

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- New feature: enhancement of the `--layer` option for fio-cat and fio-dump
to allow separate layers of one or more multi-layer input files to be
selected (349).