Mini Diary versions

v3.0 [Jun 11, 2020]
• Add spellchecking
• Add word count to toolbar
• Add "Go to date" dialog
• Move toolbar to bottom of editor
• Add "First day of the week" option
• Add shortcuts for "Go to date" and "Go to today"
• Improve word count accuracy (handling of punctuation marks and CJK characters)
• Enforce min/max dates
• Fix "entries per week" count
• Various UI improvements