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

.config/env.yaml

@@ -0,0 +1,66 @@
+---
+aws:
+  .DESCRIPTION: >-
+    standard AWS environment variables used by awscli and other tools
+  account:
+    .ENVIRONMENT: AWS_ACCOUNT
+  efs:
+    local-mount-point:
+      .DESCRIPTION: >-
+        fully-qualified path to mount the EFS drive
+      .ENVIRONMENT: AWS__EFS__LOCAL_MOUNT_POINT
+  profile:
+    .ENVIRONMENT: AWS_PROFILE
+  region:
+    .ENVIRONMENT: AWS_REGION
+directus:
+  .DESCRIPTION: >-
+    details for a directus instance
+  api-token:
+    .ENVIRONMENT: DIRECTUS__API_TOKEN
+  base-url:
+    .ENVIRONMENT: DIRECTUS__BASE_URL
+discord:
+  .DESCRIPTION: >-
+    details for discord bot
+  bot-token:
+    .ENVIRONMENT: DISCORD__BOT_TOKEN
+  content-footer:
+    .ENVIRONMENT: DISCORD__CONTENT_FOOTER
+  content-header:
+    .ENVIRONMENT: DISCORD__CONTENT_HEADER
+  default-avatar-url:
+    .ENVIRONMENT: DISCORD__DEFAULT_AVATAR_URL
+  default-channel-id:
+    .ENVIRONMENT: DISCORD__DEFAULT_CHANNEL_ID
+  default-username:
+    .ENVIRONMENT: DISCORD__DEFAULT_USERNAME
+  default-webhook:
+    .ENVIRONMENT: DISCORD__DEFAULT_WEBHOOK
+linear:
+  .DESCRIPTION: >-
+    linear.app project management configuration
+  api-token:
+    .ENVIRONMENT: LINEAR__API_TOKEN
+redis:
+  .DESCRIPTION: >-
+    redis connection credentials
+  auth:
+    .ENVIRONMENT: REDIS_AUTH
+  host:
+    .ENVIRONMENT: REDIS_HOST
+  port:
+    .ENVIRONMENT: REDIS_PORT
+twilio:
+  .DESCRIPTION: >-
+    twilio account / credentials
+  account-sid:
+    .ENVIRONMENT: TWILIO__ACCOUNT_SID
+  api-key:
+    .ENVIRONMENT: TWILIO__API_KEY
+  api-secret:
+    .ENVIRONMENT: TWILIO__API_SECRET
+  default-phone-from:
+    .ENVIRONMENT: TWILIO__DEFAULT_PHONE_FROM
+  default-phone-to:
+    .ENVIRONMENT: TWILIO__DEFAULT_PHONE_TO