windows env var fix

fix typo in README

try to fix publish workflow

Add GCS support 

add azure storage support

multi arch docker support

fixed #123

replace api version check with specific feature checks

This is important when mounting user volumes onto the container, so that
the generated output will be owned by the appropriate user id..

* ensure compat with hide_version Grafana setting

changed restore_functions to ordered dict

* save dashboard using uid rather than dashboard name

* bump version
* update CHANGELOG

add configuration attribute to set backup file name

remove useless cleanup metod within tempfile

Update for issue https://github.com/ysde/grafana-backup-tool/issues/106

added python2 support to restore functions

[Feature] add AWS_ENDPOINT_URL config option

add option backup_file_format in config