v1.4.4

add type : file

V1.4.3

1. remove content
2. modify download address
3. add article

v1.4.2

fix:
1. queryLicense
2. saveMetadata
3. queryMetadata: lose sender

v1.4.1

update image demo

v1.4.0

1. Implemented transfer ownership
2. Packed a JAR
3. Added data constraints models
4. Added audio demo

v1.3

update data-flow diagram

v1.2

build v1.2 release

v1.1

add custom and private type

v1.0

[update] add version