In HighQ 5.4 we have made multiple API changes inline with the HighQ features. 

5.4 API changes for each feature are listed as under: 

• Files 
• Admin section
• Social features
• iSheet changes
• Publisher changes

Files - Collaborate 5.4 API changes list

Admin section - HighQ 5.4 API improvements

Social features - HighQ 5.4 improvements

iSheets - HighQ 5.4 API improvements

Publisher 5.4 API list