[RELEASE] Added bugfix for EXT:proxycachemanager integration

v1.0.3

[BUGFIX] Skip empty URLs in tree for flushing

[RELEASE] Add compatibility for EXT:proxycachemanager

v1.0.2

[RELAESE] Add compatibility for EXT:proxycachemanager

[RELEASE] Updated composer.json information

This is a composer-only release

[RELEASE] Initial release

v1.0.0

[TASK] Initial commit