* Added support for SUSE and derivatives for command-not-found plugin

* Updated command-not-found documentation to list support for SUSE and derivatives

* Add plugin for istioctl completion. close #10405

* fix typo

* Update README.md

For Volta JavaScript toolchain
https://github.com/volta-cli/volta

Closes #9463

Fixes fb86ec77

Co-authored-by: K Harishankar <48408097+Haritronic909@users.noreply.github.com>

Fixes #10505

Closes #10474

Co-authored-by: Tom Payne <twpayne@gmail.com>

BREAKING CHANGE: the `DEFAULT_PROXY` setting has been renamed to `SHELLPROXY_URL`,
and `CONFIG_PROXY` has been renamed to `SHELLPROXY_CONFIG`. See the plugin README
for more information.

Co-authored-by: Marc Cornellà <hello@mcornella.com>

Closes #5992

Closes #2177
Closes #6197

Co-authored-by: Henrik Ravn <hravnx@gmail.com>

Closes #8912

Added the red dot (instead of the default `*`) if the branch is dirty.

The bira theme only supported git, now it supports mercurial as well. It
needed ito call `hg_prompt_info` and the `ZSH_THEME_HG_PROMPT_`
variables.

Closes #6631

BREAKING CHANGE: the `hg_prompt_info` function now uses `ZSH_THEME_HG_PROMPT_PREFIX`
and `ZSH_THEME_HG_PROMPT_SUFFIX` variables when displaying branch information, similar
to the `git_prompt_info` function.

Closes #6631

Replaced two different calls of hg with one `hg --id --branch` for retrieving
information whether we're in a repo (will be empty if not), whether the repo is
dirty (revision id will contain "+" if there are uncommitted changed), and the
branch name.

Closes #6197
Closes #7929

Closes #3500

Co-authored-by: Josh Soref <jsoref@users.noreply.github.com>