[Feature] Commits which are features should start with '[Feature]' and followed by a quick summary on the top line, followed by some extra details in the commit body.
[Fix] Commits which fix bugs, or minor improvements to existing features should start with '[Fix]' and followed by a quick summary on the top line, followed by some extra details in the commit body.
Commits which fix bugs caused by previous commits (since last release), or otherwise make no functionality changes, should have no prefix. These will not be added to the project change log.
The essentials bug tracker can be found at https://essentials3.atlassian.net/
Other advice
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Not all features are 'Essentials Ready'. Essentials is designed to be cover the basic needs of Minecraft server administration, for this reason, we reject over 80% of feature requests.
Before developing an Essentials feature, we would recommend speaking to a developer in the Essentials IRC channel (#essentials on irc.esper.net).