gource-0.52
- 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.