add a best/better effort get claim as string

[Brian Campbell]

that won’t throw an exception on a number etc.

to allow for easier accommodation of things like “The value of the 'requested_expiry' claim is not the expected type (300 - Cannot cast java.lang.Long to java.lang.String)” from CIBA where requested_expiry is supposed to be a number but was implemented by at least one as a number

[Brian Campbell]

add a getStringClaimValue(...) method on JwtClaims as a a best/better effort to get the claim value as string - fixing Issue #145

→ <<cset 2e8f0c3fe7fd>>

[Brian Campbell]

released in jose4j-0.7.0 https://bitbucket.org/b_c/jose4j/wiki/Release%20Notes#!jose4j-070-january-17-2019