Merge pull request #108 from ucan-wg/cont-test

container: add a helper for test only

Merge pull request #100 from ucan-wg/pol-neq

policy: implement the missing '!='

Merge pull request #94 from ucan-wg/base64-string

container: I/O as strings for base64

Merge pull request #15 from ucan-wg/b5/make-apache-mit-license

chore: switch to apache/MIT license