minor update

reverse update last release

minor update

fix minor bug

enhance UI

update ddlang

Debug Lesson

• Debug sentence translation in Lesson
• Display topics in Lesson by default
• Seach lesson by text
• Update lesson steps

Debug

• Fix tour step in Lesson
• Separate display of exercise/test setting
• Update localization

v13.4.1.4

switch ddlang item feedback and mediation feedback

v13.4.1.3

update

v13.4.1.2

update

v13.4.1.1

update reading test

Enhance Reading practice

v13.4.1

bug proof