2.0.0: Api change

• Now TimeParser is not a static class - you need to create an instance of parser.

  $parser = new wapmorgan\TimeParser\TimeParser('english');

  and then parse any number of strings.

  $datetime = $parser->parse(fgets(STDIN));

• For one-call parsing there is a static method parseString($string, $languages = 'all', $allowAlphabeticUnits = false, $falseWhenNotChanged = false): DateTimeImmutable.
• Added tests.