Changelog
---------
**0.8.1 (released 2015-09-16)**

- packaging fixes. 0.8.0 does not install correctly from pypi.

**0.8.0 (released 2015-09-15)**

- python 3 compatibility. ulmo is now compatible py python 2.7 and python 3.4.
- ulmo is now being tested on Windows/Linux/MacOSX using AppVeyor and Travis CI.
- the ioos conda channel is now the supported way to get ulmo.
- added conda environment yaml files to make it easier to set up a development environment.

**0.7.8 (released 2015-07-02)**

- no changes, had to bump version number because of a corrupt file uploaded to pypi.

**0.7.7 (released 2015-07-02)**

- dropped python 2.6 support
- fixed bug in extracting raster file from zip file on windows
- fixes for cdec service
- fix url_params kwarg typo for nwis service

**0.7.6 (released 2015-04-27)**

- fixed ncdc.gsod services to use new station list over depreciated list (thanks Victor)
- added USGS National Elevation Dataset (NED) raster service
- added USGS Earth Resources Observation Systems (EROS) raster services
- allow passthrough of extra kwargs for USGS NWIS services


**0.7.5 (released 2015-01-26)**

- add support for pandas 0.14 and 0.15
- add a function to selectively remove data from nwis hdf5 cache


**0.7.4 (released 2014-09-09)**

- in cuahsi.wof module: allow optional configuration of caching behavior for
  underlying suds SOAP library
- in cuahsi.wof.get_values(), variable_code is no longer a keyword argument. It
  didn't make sense for it to be a kwarg since it is not optional.


**0.7.3 (released 2014-07-16)**

- bugfix: using parameters argument in ulmo.ncdc.gsod.get_data() was not working


**0.7.2 (released 2014-06-17)**

- add parser for TWDB DOT dataloggers to usgs.eddn


**0.7.1 (released 2014-06-05)**

- bugfix: in cpc.drought dataset calculate year number externally rather than
  using year number from data files, as they are sometimes incorrect (see github
  issue #66)


**0.7.0 (released 2014-04-01)**

- this release includes some backwards incompatible changes
- update ncdc.cirs to use new nClimDiv dataset (see
  ftp://ftp.ncdc.noaa.gov/pub/data/cirs/climdiv/div-dataset-transition-readme.txt)
  for details about the new dataset
- some ncdc.cirs element names have changed:
    - cdd -> cddc
    - hdd -> hddc
    - pcp -> pcpn
    - tmp -> tmpc
- fix flakey cpc.drought url determination causing data for the 2011
  agricultural year to be unavailable


**0.6.7 (released 2014-03-28)**

- fix usgs.cpc year/week number reckoning bug


**0.6.6 (released 2014-03-24)**

- fix usgs.eddn parsers: values should be interpretted as reversed for sutron
  and texuni dataloggers


**0.6.5 (released 2014-03-14)**

- usgs.eddn hdf5 files will no longer grow larger than they have to with each
  update
- fix incorrect ghcn_daily wm_oid when using pandas 0.13.1
- fix incorrect pytables required version


**0.6.4 (released 2014-01-22)**

- a bunch of minor fixes for working with pandas 0.13
- this release drops support for pandas 0.10.1; the minimum required version of
  pandas is now 0.11
- usgs.eddn.get_data will now make multiple requests if it encounters a 'Maximum
  data limit reached' message


**0.6.3 (released 2013-12-12)**

- add cdec.historical for accessing California Department of Water Resources
  California Data Exchange Center
- fix last_modified dates being incorrectly updated when using nwis hdf5 backend
  on some platforms


**0.6.2 (released 2013-11-19)**

- add usgs.eddn module for accessing USGS Emergency Data Distribution Network


**0.6.1 (released 2013-07-31)**

- raise a friendlier error message for usace.swtwc when no data is found
- bugfix: waterml files with empty metadata elements (e.g. method) were breaking
  the parsing logic


**0.6.0 (released 2013-07-30)**

- this release includes some backwards incompatible changes
- simplified labels used for KBDI values: kbdi_avg -> avg, kbdi_min -> min...
- added parameter_code kwarg to usgs.nwis.hdf5.get_site_data
- added start and end dates to cuahsi.wof.get_values()
- added support for NCDC's CIRS drought index dataset
- fixed filesystem timestamp related bug that could cause file-based datesets to
  be unnecessarily re-downloaded
- version number is now available at ulmo.__version__
- misc documentation fixes


**0.5.0 (released 2013-05-14)**

- nwis.pytables has been replaced with nwis.hdf5 which uses the
  pandas.io.pytables backend; things should generally run a bit faster now and
  the code is much cleaner. There is one backwards-incompatible change:
  nwis.hdf5.get_site() is now thread-safe. There was an undocumented behavior
  where if a site could not be found in the hdf5 file during a
  nwis.pytables.get_site() call, then a request to the NWIS service would be
  made and the site table would be updated but no longer happens. You must
  explicitly run nwis.hdf5.update_site_list() to update the site list first.
- the nwis.pytables namespace is deprecated in favor of nwis.hdf5 because it is
  shorter and more recognizable but pytables is still powering things under the
  hood (via the pandas HDFStore)
- parsed timeseries data dicts from waterml-based datasets (cuahsi.wof and
  usgs.nwis) now contain parsed site info mapped to the 'site' key
- add support for pre-1997 data from CPC's weekly drought monitor dataset
- bugfix: some related to change of the "current" agricultural year for CPC
  weekly drought data
- add support for Texas Weather Connection's Daily Keetch-Byram Drought Index
  (KBDI) dataset


**0.4.1 (released 2013-03-04)**

- bugfix: interpret missing data ('----') correctly in usace.swtwc.get_stations


**0.4.0 (released 2013-03-04)**

- this release includes some backwards incompatible changes
- usgs.nwis date_range parameter has been replaced with more explicit
  start, end and period parameters
- ncdc.gsod.get_data() parameters renamed: start_date -> start
  and end_date -> end to be consistent with other dataset APIs
- ncdc.gsod.get_stations() now allows limiting stations to matching parameters
  (e.g. country='US')
- all date and datetime parameters are now consistently parsed
- added support for CUAHSI's HIS Central service: ulmo.cuahsi.his_central
- added preliminary support for CPC's weekly drought monitor dataset (>=1997)
- added preliminary support for data from USACE Tulsa Water District Control


**0.3.0 (released 2013-01-14)**

- this release includes some backwards incompatible changes
- moved module for USGS NWIS from ulmo.usgs -> ulmo.nwis.usgs
- moved module for WaterOneFlow from ulmo.wof -> ulmo.cuahsi.wof



**0.2.4 (released 2013-01-14)**

- core API functions can be called from main dataset modules
- support python 2.6



**0.2.3 (released 2013-01-13)**

- add ghcn daily dataset
- add preliminary support for CUAHSI WOF
- add sphinx documentation
- clean up tests
- make pytables an optional dependency; pytables-related functionality is just
  disabled if pytables can't be found



**0.2.2 (released 2012-11-05)**

- bugfix: broken usgs.pytables last_refresh handling



**0.2.1 (released 2012-11-04)**

- turn on compression for pytables cache files
- minor bugfix and test cleanup



**0.2.0 (released 2012-10-12)**

- initial public release as ulmo (formerly pyhis)
