Changelog for Asset Modeller 0.18.0

Changes

• Allow merging two meta-edges by changing type or direction (PR, #6921)
• Use Altworx UI Components (PR, #6792)
• Upgrade LiveView to 1.0 (PR, #6984)
• Fix text shown after the multi-line modal is confirmed (PR, #6986)
• Bump Altworx Auth to the newest version (PR, #6691)
• Set up Prettier for formatting of assets (PR, #6836)