devops-tools/documentation#6 Move changelog to devops tools docs

CHANGELOG

-v1.7.4 2021-01-13
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-docker/l3d#77 Fix sudo issue with workaround
-docker/l3d#78 Make composer executable writable to allow selfupdate for regular users
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-v1.7.3 2021-01-12
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-composer/plugin/docker4drupal#41 Don't use root for Drush commands
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-v1.7.2 2021-01-06
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-docker/l3d#72 Add jp
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-v1.7.1 2021-01-06
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-docker/l3d#73 Add zsh shell
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-v1.7.0 2020-12-29
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-composer/plugin/docker4drupal#39 Add PHP 8.0
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-v1.6.1 2020-12-25
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-docker/l3d#57 Install sudo
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-v1.6.0 2020-11-09
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-Composer 2 compatibility
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-v1.5.2 2020-10-16
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-Fix env variable PHP_VERSION
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-v1.5.1 2020-10-15
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-Add container for PHP 7.4
-Change build strategy: use PHP-Alpine image instead of vanilla Alpine
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-v1.4.4 2020-05-22
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-Take different approach to fix iconv() notices
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-v1.4.3 2020-05-22
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-Fix iconv() notices
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-v1.4.1 2020-02-10
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-Force update to update to composer version 1.9.3
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-v1.4.0 2020-01-12
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-Add version to the images again
-docker/l3d#4 Set permissions after "drush generate"
-docker/l3d#39 Update to git-extras version 5.1.0 by hard-copying column as a binary
-docker/l3d#34 Add support for PHP 7.3
-docker/l3d#36 Add apropos which also brings man
-docker/l3d#37 Add phpstan script which runs in its own docker container
-docker/l3d#38 Update Docker to 19.03.5
-docker/l3d#38 Update Docker Compose to 1.25.1
-docker/l3d#40 Update to Python 3 No longer update image for PHP 7.0 and 7.1