Send concise text, notifications, or updates with optional Markdown and images to a TRMNL e-ink terminal display via webhook.
- Added Markdown support to the `text` field for enhanced formatting (bold, italics, lists, etc.). - Introduced support for including an image via a fully qualified URL using the `image` merge variable. - Updated usage examples to demonstrate Markdown formatting and image inclusion. - Extended instructions for using Markdown and images to improve display content. - Clarified notes on image requirements and layout specifics.