BUG: fixed typo in read_cfradial functions
+Add locations of all well-known WSR-88D stations. (Source: Weather Climate Toolkit)
+Add capability to read old nexrad-cdm archive. (Read lat,lon,alt from config)
*It is more reasonalbe to always set reference altitude to sea surface when mering multiple radars. (Change in grid_mapper.py)
BUG: fixed bug in add_field_like radar method

add_field_like method of radar would overwrite the old field's data and
metadata since a copy was not made, this correct this behavior.
ENH: 4DD routine

Adding the capability to use a previous velocity volume as an initial condition
to the dealiasing routine. Note that this enhancement was how the original 4DD
algorithm was intended to be implemented, as it should provide better results.
This commit attempts to address some of the issues raised in issue #119.
ADD: Cython generated _fourdd_interface.c

Adding the generated C file from the Cython build since Cython isn't
a build dependency of Py-ART.
MOD: _fourdd_h.pxd

Attempting to expose some of the defined constants in the header file
FourDD.h so that the user knows what the values of some of these
constants are at compile-time. As with discussion with @jjhelmus, these
constants cannot actually be changed at run-time; they must be changed
before compiling.
ADD: echo classification

Adding echo classification module, including a Fortran routine for the
method of Steiner et al. (1995). The echo classification module should
be general and host any number of methods (e.g. Steiner method,
Biggerstaff method, etc). This commit does not include the necessary
object and/or pyf files required to actually run the code, as I figured
@jjhelmus would be best at handling this. I assume some modification to
the setup.py file in pyart.retrieve is in order...
MOD: minor changes
ADD: echo class wrapper

Adding f2py wrapper to the Fortran Steiner echo classification routine.
According to the SciPy docs, the distutils extensions in NumPy can be
used in setup.py to define an extension module entirely in terms of this
pyf interface file, and is the best way to distribute f2py extension
modules.
ENH: default configuration

Adding wind retrieval fields to the default configuration file. The bare
bones metadata for these fields are included: 'units', 'standard_name',
and 'long_name'.
ENH: location set when reading old NEXRAD files.

Reading CDM converted NEXRAD files which do not contain the
latitude, longitude and altitude will not fill these parameters
in from the known locations of the NEXRAD stations.
DOC: documented nexrad_common module
Merge pull request #137 from jjhelmus/pr_126

ENH: Location determined when reading older NEXRAD files
Merge pull request #136 from kirknorth/master

ENH: default configuration
Merge remote-tracking branch 'arm_doe/master'
STY: remove trailing whitespace in default_config.py
MOD: minor changes

Adding some minor changes, as well as some more documentation. The
documentation is still unfinished though...
Merge pull request #139 from jjhelmus/master

BUG: Fixes for two minor bugs
ENH: Can now read Sigmet files with some additional data types
Merge pull request #143 from jjhelmus/sigmet_field_72_74

ENH: Can now read Sigmet files with some additional data types