composer self-update

## composer --version
## Do not run Composer as root/super user! See https://getcomposer.org/root for details
## Composer version 1.9.0 2019-08-02 20:55:32


composer config -g github-oauth.github.com 4fe4faf52ce29b298d02c6473a1ee7e10047ed7c

#token: 4fe4faf52ce29b298d02c6473a1ee7e10047ed7c

composer require "fxp/composer-asset-plugin:^1.1.3"

composer require "fxp/composer-asset-plugin:dev-master"

# composer require "yiisoft/yii2":"2.0.7"

# sometimes it works only, if we first update to this version and then to the higher version
composer require "yiisoft/yii2":"2.0.5"

composer require "yiisoft/yii2:~2.0.10" --update-with-dependencies