Grib2io

* Updated `find_library()` in setup.py to provide absolute paths and resolve symlinks and if inside a conda installation (env var `CONDA_PREFIX` is set), use only libs from the conda installation.

**Full Changelog**: https://github.com/NOAA-MDL/grib2io-interp/compare/v1.0.2...v1.0.3

Fixing a bug in setup.py where include dirs might be missing.

**Full Changelog**: https://github.com/NOAA-MDL/grib2io-interp/compare/v1.0.1...v1.0.2

What's Changed
* Updated setup.py to automatically find sp and ip libraries when install in "common" locations EricEngle-NOAA in https://github.com/NOAA-MDL/grib2io-interp/pull/6


**Full Changelog**: https://github.com/NOAA-MDL/grib2io-interp/compare/v1.0.0...v1.0.1

**Full Changelog**: https://github.com/NOAA-MDL/grib2io-interp/compare/v1.0.0rc1...v1.0.0

What's Changed
* Big update....vector interpolation support by EricEngle-NOAA in https://github.com/NOAA-MDL/grib2io-interp/pull/2

New Contributors
* EricEngle-NOAA made their first contribution in https://github.com/NOAA-MDL/grib2io-interp/pull/2

**Full Changelog**: https://github.com/NOAA-MDL/grib2io-interp/commits/v1.0.0rc1

grib2io Version 0.9.3 Release Notes

New Features:

* Implementation of a wgrib2-formatted probability threshold string generated by new function, `grib2io.utils.get_wgrib2_prob_string()`. The string is stored in `grib2io.open._index['probString']`and in instances of `Grib2Message` as the `threshold` attribute. The logic for generation of the probability threshold string originates from wgrib2 source, [Prob.c](https://github.com/NOAA-EMC/NCEPLIBS-wgrib2/blob/develop/wgrib2/Prob.c). (#16)

* The `grib2io.open.select()` method now accepts keyword arguments `threshold=` that accepts a wgrib2-formatted probability threshold string and `percentile=` that accepts a integer representing the percentile value. (16 and 17)

* The `grib2.open` class `__init__` method now accepts a boolean keyword argument `decode=` (default is `True`) to provide user control of whether or not to decode GRIB2 integer code values from the GRIB2 definition sections to 'plain language" metadata. (18)

Bug Fixes:

* Fixed issue decoding probability threshold values from GRIB2 message witih product definition template numbers 4.5 and 4.9. (15)