• Support rendering at native resolution on Retina / Ultra HD displays.
• Support ISO 8601 timestamp format.
• Allow custom log and caption file timestamps to be strings.
• Change regular expression library to PCRE2.
• Fixed filenames not being affected by --font-scale (Carl Colena).
• Fixed file key not being affected by --font-scale.
• Added --file-idle-time-at-end option.
• Added --fixed-user-size option.