Add version

[m00sey]

• [x] add "version" after credentialType

• [x] correct usage of individuals to persons

• [x] update edges

• [x] update vlei-qvi with new durls

• [x] update published weboftrust published schema

• [x] update keripy

• [x] update sally

• [x] update GLEIT-IT/gar

[m00sey]

~Linked https://github.com/GLEIF-IT/gar/pull/5~

[m00sey]

~Linked https://github.com/WebOfTrust/keripy/pull/374~

[m00sey]

~Linked https://github.com/GLEIF-IT/sally/pull/15~

Release 0.2.0.

[m00sey]

Linked https://github.com/WebOfTrust/vlei-qvi/pull/9

[m00sey]

~Linked https://github.com/WebOfTrust/WebOfTrust.github.io/pull/1~