1.21.0

• Add an option to show the caret of main window's textbox even when it's read only (#61)
• Add hotkeys to change the caret position of main window's textbox (#61)
• Add a hotkey that allows looking up the term at the caret position of main window's textbox (#61)
• Add hotkeys to select the lookup result that will be mined (#61)
• Add a hotkey to mine selected lookup result (#61)
• Add an option to stop/resume increasing time stat when JL is minimized
• Add an option to control whether punctuation will be stripped when calculating the read character count
• Don't display search-only forms (JMdictProject/JMdictIssues#75, https://www.edrdg.org/wiki/index.php/Editorial_policy#Search-only_Forms)
• Don't block adding custom words/names longer than necessary
• Populate the spelling field for Add Custom Name/Word window with the last looked up term if there's no selected text
• Fix copying the text from WebSocket to main window not working (#63)
• Fix incorrect reading/alternative spelling orthography info position
• Fix JL not working as expected when it's run through command prompt without its startup directory set correctly with the /D parameter (#62)
• Some other minor bug fixes and enhancements