v5.3.1

Optimized 19 new icons:

• add-page
• doc-search-alt
• doc-search
• doc-star-alt
• doc-star
• empty-page
• journal-page
• journal
• multiple-pages-add
• multiple-pages-delete
• multiple-pages-empty
• multiple-pages-remove
• multiple-pages
• page-edit
• page-search
• page-star
• page
• remove-page