Merge pull request #391 from ZeroPointEnergy/release_3.0.0

Add change log for the 3.0.0 release

Author: ZeroPointEnergy

CHANGELOG.md

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+# Change Log
+
+Notable changes to new releases of Puppet Dashboard.
+
+## [3.0.0] - 2019-07-01
+
+This release includes changes from over 5 years since the 2.0.0-beta2 release.
+
+### Fixed
+
+- Handle delayed_job failures better
+- Various enhancements to sorting in various views
+- Improvements to error detection in the log
+- Partial radiator reload
+- Various fixes to various tasks
+
+### Changed
+
+- Updated Rails framework to 5.2.3
+- Support for new Ruby versions (2.4, 2.5, 2.6)
+- Support for older Ruby versions has been removed as several gem dependencies
+  are no longer compatible
+
+### Added
+
+- The old manual from the website is now available as markdown documents in the source tree.
+- Support for new Report formats
+- PostgreSQL optimizations
+- New task to delete a variable on a node
+- Node add,show and delete tasks now accept a list of nodes
+- Basic support for environments
+
+## Other
+
+- Restructuring to maintain Puppet Dashboard as an open source project
+- Added haml-lint, rubocop and coverage reports for code maintenance

VERSION

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-2.0.0-beta2
+3.0.0