Lowercase header in metadata
Fix mistaken "java" with "git"
Avoid pulling in older version of stencil

This commit avoids a lein-pedantic complaint:

Failing dependency resolution because:

[lein-resource "0.3.2"] -> [stencil "0.3.1"]
  is overrulling
[com.palletops/lein-pallet-crate "0.1.0"] -> [stencil "0.3.2"]

Please use
[lein-resource "0.3.2" :exclusions [stencil]]
to get [stencil "0.3.2"]
or use
[com.palletops/lein-pallet-crate "0.1.0" :exclusions [stencil]]
to get [stencil "0.3.1"].