expose redtoreg (reduced to full gaussian grid) interpolation function

Changelog

@@ -1,6 +1,8 @@
-since version 2.1.5 release
-===========================
+version 2.1.6 (not yet released)
+================================
 * switch dynamic version handling from pkg_resources (in setuptools) to packaging
+* expose 'redtoreg' function for interpolating reduced to full gaussian
+  gridded fields.
 
 version 2.1.5 release
 =====================

docs/_build/html/.buildinfo

@@ -1,4 +1,4 @@
 # Sphinx build info version 1
 # This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
-config: 8dd736fc547b45a6a09dfaf65e8e237b
+config: 42d4d920ea5c62ddfc8d5e646da867e5
 tags: 645f666f9bcd5a90fca523b33c5a78b7

docs/_build/html/_sources/api.rst.txt

@@ -90,5 +90,5 @@ Module docstrings
 -----------------
 
 .. automodule:: pygrib
-   :members: open, gribmessage, index, gaulats, julian_to_datetime, reload, setdates, fromstring, multi_support_off,multi_support_on, tolerate_badgrib_off, tolerate_badgrib_on, set_definitions_path, get_definitions_path
+   :members: open, gribmessage, index, redtoreg, gaulats, julian_to_datetime, reload, setdates, fromstring, multi_support_off,multi_support_on, tolerate_badgrib_off, tolerate_badgrib_on, set_definitions_path, get_definitions_path
    :show-inheritance:

docs/_build/html/_sources/installing.rst.txt

@@ -34,11 +34,11 @@ an error saying ``boot.def`` cannot be found.
 Developing
 ----------
 
-To build from source, clone the github repository and run setup.py:
+To build from source, clone the github repository and install:
 
     >>> git clone https://github.com/jswhit/pygrib
     >>> cd pygrib
-    >>> ECCODES_DIR=path/to/eccodes python setup.py install
+    >>> ECCODES_DIR=path/to/eccodes pip install -e .
 
 where ``$ECCODES_DIR`` is the path to the directory containing ``include/grib_api.h``
 and ``lib/libeccodes.so``. If ``ECCODES_DIR`` is not specified, a few common locations