Fixed an error in the SearchCoverage.find method.
Added a check to ensure that different master manager objects were being compared for equality.
Added statistics calculations for a coverage.
Added ability to search by ISO time string as well as 64-bit float.
Added ability to auto-convert from older version to new version.
Removed HDF remnants from tests.
Cleaned up extraneous logging.
Merge branch 'master' of https://github.com/ooici/coverage-model into HDFtoDB

Conflicts:
	coverage_model/test/test_complex_coverage.py
Initial implementation of interface changes for M117.
M117 more refined interface.
Parameter data is now stored in Postgres tables.  This update requires ion-definition commit 77effec0488d7feab22cac3e8453756e257ba5ca.
Removed bricking dependencies that prevented coverage reconstruction.
M117 testing updates
M117/Issue #161.

Added boolean argument 'fill_empty_params' to get_parameter_data().  If set to true, requested parameters will be filled with the default fill value if no values exist for that parameter.
M117/Issue #160

Added new coverage model interface classes to the init file.
Renamed files and classes as appropriate.
M177 Data Integrity

Calculated hash of data on data writes.  Store hash values separate from hashed data. Provided coverage interface to validate data.
M117/Issue #163 Downsampling or Striding Data

Implemented interface that down samples data based on a stride step.  Default is no striding.
M117 / ooici coverage-model Issue #162 - Open Interval Support
Open intervals are now supported.  Key error issue has been corrected.

M117 / ooici coverage-model Issue #165 - Coverage Model Version
Coverage Model version bumped to 0.0.3
Makes test to show data type time limits
Test showing issue with category types
Merge pull request #3 from lukecampbell/categorybug

Shows Category Bug
M117 more refined interface.
Parameter data is now stored in Postgres tables.  This update requires ion-definition
Merge branch 'HDFtoDB' of /Users/casey/Desktop/OOI/Dev/code/casey/pregithub/coverage-model into HDFtoDB

Conflicts:
	coverage_model/test/test_postgres_storage.py
M117 updates

Corrected #170 ConstantOverTime overlapping

Added interface to support multiple data store types.
M117/ Issue #169 Array Type Insertion

Temporary solution for both well-formed and ragged arrays.  Need to develop a better storage algorithm, but the interface works.
M117/ Issue #169 Array Type Insertion

Still a temporary solution, but it may require less work on the client side of the interface.
Test to show bug with sparse type named lon