tests: updated number of tests

[skip ci]

README.md

@@ -384,7 +384,7 @@ It can process well-formed CSVs in _any_ language so long as its UTF-8 encoded.
 Finally, though the default Geonames index of the `geocode` command is English-only, the index can be rebuilt with the `geocode index-update` subcommand with the `--languages` option to return place names in multiple languages ([with support for 253 languages](https://download.geonames.org/export/dump/alternatenames/)).
 
 ## Testing
-qsv has ~1,475 tests in the [tests](https://github.com/jqnatividad/qsv/tree/master/tests) directory.
+qsv has ~1,490 tests in the [tests](https://github.com/jqnatividad/qsv/tree/master/tests) directory.
 Each command has its own test suite in a separate file with the convention `test_<COMMAND>.rs`.
 Apart from preventing regressions, the tests also serve as good illustrative examples, and are often linked from the usage text of each corresponding command.