Merge pull request #1140 from CSSFrancis/Prepare-Release

Prepare for 0.21.0 Release

Merge pull request #1131 from CSSFrancis/PrepareRelease

Release: Update before release

Merge pull request #1091 from CSSFrancis/prepare-bugfix

Prepare Bugfix Release

Merge pull request #1089 from CSSFrancis/Prepare-Release

Difffsims greater than equal

Merge pull request #1072 from CSSFrancis/update-before-release

Merge pull request #990 from CSSFrancis/release_fix

Update ipywidgets and author list

Merge pull request #957 from CSSFrancis/documentation_follow_up

Documentation Follow Up

Merge pull request #930 from CSSFrancis/fix_find_direct_beam

Fix find direct beam

Merge #889 from CSSFrancis/DeprecateDaskTools

Deprecate Dask Tools

Merge #855 from pc494/zero142

Release Version 0.14.2