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/kubectl/set-namespace

@@ -1,41 +0,0 @@
-#!/bin/zsh
-use kubectl --group kubectl
-#####################################################################
-
-MAIN() {
-	local USAGE="
-	usage: [namespace] [...options...]
-
-	args:
-	  namespace   (optional) the full name of the namespace context to set
-
-	options:
-	  --subsession   REDIS subsession (default 0)
-
-	  -h, --help   show this dialogue and exit
-	"
-	local NAMESPACE
-	local SUBSESSION=0
-
-	while [[ $# -gt 0 ]]
-	do
-		case $1 in
-			--subsession ) SUBSESSION=$2; shift 1 ;;
-
-			-h | --help ) USAGE; return 0 ;;
-
-			* )
-				[ $NAMESPACE ] && ERROR "unexpected argument '$2'"
-				NAMESPACE=$1
-				;;
-		esac
-		shift 1
-	done
-
-	[ $NAMESPACE ] || NAMESPACE=$(KUBECTL__SELECT_NAMESPACE)
-	[ $NAMESPACE ] || ERROR 'must provide or select a valid namespace'
-
-	CHECK_ERRORS
-
-	KUBECTL__SET_NAMESPACE $NAMESPACE
-}