Echo-Loop version history

- Added PDF export for study materials - Added phrase lookup - Improved speech recognition model management

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.21...v1.0.22 - Supports sentence playback with selectable accents and voices.

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.20...v1.0.21 - Supports sentence playback with selectable accents and voices.

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.19...v1.0.20 - Supports AI and third-party dictionary lookup - Saves user preferences for each learning stage

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.18...v1.0.19 - Background playback - Preserve short sentences in AI transcription - Saved library sorting

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.17...v1.0.18 - Improved learning flow - Improved Listen Freely - Added sleep timer

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.16...v1.0.17 - Podcast subscriptions - Import audio from links or cloud drives - Auto-follow subtitles in blind listening - Optional scoring in retelling practice - Draggable playback progress bar - Improved MP3 subtitle sync

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.15...v1.0.16 - 支持编辑字幕 - 支持用户登录 - 修复安卓通知问题 - 复述后可自动播放录音

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.14...v1.0.15 - 音频和字幕导入更顺畅 - 修复已知问题

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.13...v1.0.14 -深色模式改为纯黑背景（AMOLED 友好） -逐句精听与难句跟读支持跳过 -优化盲听/段落复述的暂停体验

**Full Changelog**: https://github.com/echo-loop/Echo-Loop/compare/v1.0.12...v1.0.13 主要变更： - 支持设置播放速度 - 加入学习社群入口 - 修复已知问题