Add release notes for 1.4.3

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Bump version to 1.4.1

Add release notes for 1.4.0

Add release notes for 1.4.0-rc2

Fix version detection on AppVeyor

Use tag-based version for packages

Merge pull request HangfireIO#289 from lennybacon/patch-1

Update Cron.cs

Merge pull request HangfireIO#295 from HangfireIO/1.3.3-release

1.3.3 Release

Merge pull request HangfireIO#292 from HangfireIO/1.3.2-release

1.3.2 release