v5.0.0

=====================================================================

Excited to bring V5 to life. This includes some BREAKING CHANGES to
several aspects of ZSH-type scwrypts. Please refer to the readme
for upgrade details (specifically docs/upgrade/v4-to-v5.md)

--- New Features -------------------------

- ZSH testing library with basic mock capabilities

- new scwrypts environment file format includes metadata and more
  advanced features like optional parent env overrides, selection
  inheritence, and improved structurual flexibility

- speedup cache for non-CI runs of ZSH-type scwrypts

- ${scwryptsmodule} syntax now allows a consistent unique-naming
  scheme for functions in ZSH-type scwrypts while providing better
  insight into origin of API calls in other modules

- reusable, case-statement-driven argument parsers in ZSH-type scwrypts

--- Changes ------------------------------

- several utility function renames in ZSH-type scwrypts to improve
  consistency

- documentation comments included in ZSH libraries

- ZSH-type scwrypts now allow library modules to live alongside
  executables
  (zsh/lib still supported; autodetection determines default)

--- Bug Fixes ----------------------------

- hardened environment checking for REQUIRED_ENV variables; this removes
  the ability to overwrite variables in local function contexts

plugins/kube/kubectl/namespace.module.zsh

@@ -0,0 +1,23 @@
+${scwryptsmodule}.get() { kube.redis get --prefix "current:namespace"; }
+
+${scwryptsmodule}.set() {
+	local NAMESPACE=$1
+	[ ! "${NAMESPACE}" ] && return 1
+
+	[[ "${NAMESPACE}" =~ reset ]] && {
+		kube.redis del --prefix "current:namespace"
+		return $?
+	}
+
+	kube.redis set --prefix "current:namespace" "${NAMESPACE}"
+}
+
+${scwryptsmodule}.select() {
+	kube.kubectl.namespace.list | utils.fzf 'select a namespace'
+}
+
+${scwryptsmodule}.list() {
+	echo reset
+	echo default
+	kube.cli get namespaces -o name | sed 's/^namespace\///' | sort | grep -v '^default$'
+}