Prep for beta version.

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branch : release-1.0
check_dataset still needs to be fully tested, and moved to an appropriate module.

--HG--
branch : release-1.0
Added tag 1.0.0-beta1 for changeset bf47f7fd9993

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branch : release-1.0
Add some docstrings to the climat module.

--HG--
branch : release-1.0
Minor tweaks to some docstrings more for testing out the documentation.

(Cherry-picked from default branch)

--HG--
branch : release-1.0
fixed bugs in multiple regression code

(Cherry-picked from default branch)

--HG--
branch : release-1.0
Prep for final release 1.0.0.

--HG--
branch : release-1.0
Added tag 1.0.0 for changeset 7f94dfc61c97

--HG--
branch : release-1.0
Merge in updates from release-1.0.