feat(hooks): Adds weighted hooks

feat(helm): add --reuse-values flag to upgrade

This makes it possible to re-use the existing values on an upgrade,
merging in any new values set by `-f` or `--set`.

Closes #1876

docs(related): Added podcast, plugin article

fix(helm): manifests string parsing works for newlines in the manifests

fix(tiller): fix helm status failure on missing resource

fix(helm): add --destination flag to 'helm package'

Fixes TestInstallRelease_VerifyOptions & TestUpdateRelease_VerifyOptions

Fix identation of `helm dep` help text

The `repository` lines in the help text for `helm dep` were misaligned
with the rest of the dependency block.

Following tests were failing unnoticed
- [ ] TestUpdateRelease_VerifyOptions
- [ ] TestUpdateRelease_VerifyOptions

Fixed those tests for the reason of failure.
Also added error checking to rest of the tests in same test-file,
so that new failures do not un-noticed.

Sort dependent RBAC role and binding kinds during installation and uninstallation

able to build without being in a git repository

fix(helm): local path in requirements.yaml relative to working dir

During installation and uninstallation, handle the RBAC-related
ClusterRole, ClusterRoleBinding, Role, and RoleBinding kinds in an
order that respects their potential referential integrity, namely that
ClusterRoleBindings can refer to ClusterRoles and ServiceAccounts, and
RoleBindings can refer to ClusterRoles, Roles, and ServiceAccounts.

Fixes #2199.

closes bug: 2103

fix(helm): Don't assume index.yaml is sorted

fix(tiller): adding kind to tiller client logs

Fix typo in chart guide

Closes #2162

Trying to fix #2158

This change sorts the helm index file after downloading from a repo.

Closes #2186

closes #2136
* Adds new annotation `helm.sh/hookWeight`
* Sorts executing hooks of similar kind in ascending order
* There is no upper or lower bounds on the weights

This adds a flag similar to the --destination flag on 'helm fetch',
allowing control over the destination for the packaged .tgz file.

Closes #2117

Slightly reorganized and retitled to be accurate.

Added unit tests

Added tests for:
- [ ] pkg/version/versions.go
- [ ] pkg/repo/repo.go