1.4.0

• Added a side panel that can be opened with a right-drag from the menu button.
• Added global search across open tabs and all app notes.
• Added always-saved in-app notes with side panel management, sorting, pinning, marks, and preview tabs.
• Added pinned tabs, fixed to the left and protected from accidental closing; files and notes persist after restart.
• Added Quick Open for searching visible or recent files and notes by name.
• Added save and backup status to the status bar, with status messages replacing toast notifications when visible.
• Added localization support for Monaco editor UI.
• Added a setting to use notes as the default new tab type.
• External file changes now reload immediately when there are no unsaved edits.
• Preserved undo history when applying external changes or reloading files.
• Improved encoding handling for UTF-8 and UTF-8 BOM files, preserving BOM on overwrite and using UTF-8 for Save As.
• Removed Choices.js and replaced dropdowns with custom DOM-based controls.
• Switched most icons to Codicons and refined the UI.
• Improved custom theme loading.
• Split the main source file into smaller modules for better maintainability.
• Added Portuguese (Brazil) localization.
• Fixed various UI issues and bugs.