To match the convention of `helm install`, `helm uninstall` is the inverse.

Other tangential changes in this PR:

- StatusDeleting has been changed to StatusUninstalling
- StatusDeleted has been changed to StatusUninstalled
- `helm list --deleted` has been changed to `helm list --uninstalled`
- `helm list --deleting` has been changed to `helm list --uninstalling`
- `helm.DeleteOption` and all delete options have been renamed to `helm.UninstallOption`

I have not made any changes to the "helm.sh/hook-delete-policy", "pre-delete" and "post-delete" hook annotations because

1. it's a major breaking change to existing helm charts, which we've commited to NOT break in Helm 3
2. there is no "helm.sh/hook-install-policy" to pair with "helm.sh/hook-uninstall-policy", so delete still makes sense here

`helm delete` and `helm del` have been added as aliases to `helm uninstall`, so `helm delete` and `helm del` still works as is.

release canary v3 binaries as helm-dev-v3

feat(*): remove Time, Namespace, and Revision from template functions

Removes Time, Namespace, and Revision from being exposed to templates to
make template rendering discrete and repeatable.

ref(cmd): dry up values and chartpath flag options

ref(cmd): test template cmd using golden files

ref(cmd): refactor argument validation

ref(tests): simplify cmd test setup/teardown

Ensure proper cleanup of `HELM_HOME` and `HELM_DEBUG`

ref(*): s/tiller/helm/

feat(*): print stacktrace on error with debug enabled

 ref(cmd): consistent naming of cmd variables

ref(tests): use golden files for testing command output

ref(*): rebuild build version object

ref(pkg/tiller): add flag to enable tilling logging in tests

`go test ./pkg/tiller -test.log`

ref(*): convert const types to strings

ref(cmd): simplify cmd test setup

ref(*): remove local repository (dead code)

ref(cmd): remove serve command

https://github.com/kubernetes-helm/community/blob/master/helm-v3/000-helm-v3.md#commandflag-differences-from-helm-2

fixes #3937

feat(cmd): add --all-namespaces to list

feat(dep): replace glide with dep