chore(release): 0.1.4

[soderlind]

This pull request updates the extension to version 0.1.4, focusing on rebranding, improved feature descriptions, expanded discoverability, and a bug fix for IntelliSense completion. The extension is now named "WordPress Readme" and highlights its syntax highlighting and IntelliSense capabilities more prominently.

Rebranding and Description Updates:

• Changed the extension name from "WordPress Readme Preview" to "WordPress Readme" in package.json, README.md, and CHANGELOG.md to better reflect its broader feature set. [1] [2] [3]
• Enhanced the extension description and README to emphasize syntax highlighting, IntelliSense, and autocomplete features. [1] [2] [3]

Discoverability Improvements:

• Expanded the keywords in package.json to include "syntax highlighting", "intellisense", and "autocomplete" for better searchability in the marketplace. [1] [2]

Bug Fixes:

• Fixed a bug in the IntelliSense completion provider to prevent duplication of opening == when the user has already typed them, ensuring cleaner section heading suggestions. [1] [2]

Changelog and Versioning:

• Updated the changelog to document these changes and added a link for the new version comparison. [1] [2]
• Bumped the extension version to 0.1.4 in package.json.