PHP 8.0 compatibility (umpirsky#111)

Update data (umpirsky#92)

* Prefer symfony/intl package

* Update data

* Add new data

Update deps

Merge pull request umpirsky#75 from umpirsky/fix/74

Update data

Fixed issue umpirsky#53

As described in umpirsky#53, composer fails when using PHP7.

Merge pull request umpirsky#49 from fabienwarniez/master

Added support for XLIFF files

Merge pull request umpirsky#47 from umpirsky/feature/major-refactoring

Use list generator

Merge pull request umpirsky#35 from umpirsky/fix/issue-35

General update of the dataset

Merge pull request umpirsky#5 from erichard/patch-1

Moved deps to require-dev.