Merge pull request #424 from radiantearth/pv/1.0.0-release release prep for 1.0.0

Merge pull request #415 from philvarner/pv/release-prep-1.0.0-rc.4 release prep 1.0.0-rc.4

prep for 1.0.0-rc.3 release (#410) * prep for 1.0.0-rc.3 release * update changelog date * update citation date

Merge pull request #344 from philvarner/pv/1.0.0-rc.2-release 1.0.0-rc.2 release

Merge pull request #291 from radiantearth/dev v.1.0.0-rc.1 release merge to master

Merge pull request #254 from radiantearth/dev dev -> master merge for 1.0.0-beta.5 (second attempt)

Merge pull request #216 from radiantearth/dev merge to master for 1.0.0-beta.4 release

Merge pull request #191 from radiantearth/dev 1.0.0-beta.3 release (dev -> master)

Merge pull request #153 from radiantearth/dev dev -> master merge for 1.0.0-beta.2

Merge pull request #97 from radiantearth/release-numbers Update for 1.0.0-beta.1 release