Add a custom new language package Magento 2.1.3

Question

I'm trying to create a new language package for Magento 2.1.3.
I've been following this guide but without success.

I tried the following steps without success:

1) Collect phrases from your module

magento i18n:collect-phrases -o "/var/www/html/magento2/sv_SE.csv" -m

2) Translate the words and phrases
I translated some words to Swedish.

3) Create the language package

magento i18n:pack /var/www/html/magento2/sv_SE.csv -d sv_SE

4) Create a directory for the language package
I created a directory named i18n, DSE and another directory named sv_se.

/var/www/html/magento2/app/i18n/DSE/sv_se

5) In the above directory, I added the following:

• composer.json
• registration.php
• language.xml

My composer.json

{
    "name": "dse/language-sv_se",
    "description": "Swedish language",
    "version": "100.0.2",
    "license": [
        "OSL-3.0",
        "AFL-3.0"
    ],
    "require": {
        "magento/framework": "100.0.*"
    },
    "type": "magento2-language",
    "autoload": {
        "files": [
            "registration.php"
        ]
    }
}

My registration.php

<?php
\Magento\Framework\Component\ComponentRegistrar::register(
    \Magento\Framework\Component\ComponentRegistrar::LANGUAGE,
    'magento_sv_se',
    __DIR__
);

My language.xml

<?xml version="1.0"?>
<language xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:App/Languag$
    <code>sv_SE</code>
    <vendor>dse</vendor>
    <package>sv_se</package>
</language>

What am I missing?
The phrases that I entered in sv_SE.csv before I ran magento i18n:pack are not showing up on my site.
All commands ran with success (as far as I can tell).

Answer 1

I forgot to flush the cache...
In admin CP, go to System -> Cache Management
Click Flush Magento Cache, and click Flush Static Files Cache
Now it works! :)