chore: Release version 1.1.0

This release features some cleanup and under-the-hood changes, as well
as "ecosystem-features" that don't directly affect the way Kontemplate
itself functions.

* Resource-sets are now passed on to kubectl in individual
  invocations. This means that kubectl errors can be scoped to
  individual resource set files and issues such as #51 are less of a
  problem.
* A Dockerfile is provided and published at `tazjin:kontemplate` on
  Docker Hub. This image contains `kontemplate`, `kubectl` and `pass`
  and can be used - for example - as an image for a step in a CI
  system.
* Kontemplate is now available on Homebrew, check the README for
  installation instructions.

* If different resource sets don't contain `---` separators in YAML,
  `kubectl` calls will no longer fail. (#51)
* Autocompleted trailing slashes in shells are now filtered from
  include & exclude lists to enhance the CLI experience slightly.

main.go

@@ -11,7 +11,7 @@ import (
 	"gopkg.in/alecthomas/kingpin.v2"
 )
 
-const version string = "1.0.2"
+const version string = "1.1.0"
 
 // This variable will be initialised by the Go linker during the builder
 var gitHash string