Bug fixes

• Add license file
• Add ability to reload config without restart
• Add workaround for unloaded units

Bug fixes

• Fix some bugs
• Move to dbus ListUnits() interface for supporting systemd-219 (Centos 7)
• Add unit files from dbus ListUnitFiles() interface (systemd can unload units from memory)

Add simple webui

• add simple webui
• improve http entrypoints
• add some configuration parameters
• add journald support
• add sd_notify support

First test release

Implemets:

• simple http api for start/stop/status
• on_active, on_inactive, on_failed hooks
• blocked_by logic