- `--ignore`, `--ignore-re`: ignore messages containing an exact pattern or
matching a regular expression (migration from version 0.1.14: replace `--ignore` with `--ignore-re`)
- curly quotes and straight quotes can now be used interchangeably
- change Java stack size handling (introduced the new command line options `-l`, `-ll` and `-lll`)
- update vnu.jar to 16.1.1 (which now requires Java 8)