Add terse and key options

[Tom-Willemsen]

Should be merged after #63

Adds --terse format:

[partition=4] pu00 (96 bytes)
[partition=4] ev44 (16120 bytes)
[partition=6] pu00 (96 bytes)
[partition=6] ev44 (16120 bytes)

and --key option:

[partition=7 key=[0, 0, 0, 0, 0, 0, 8, 138]] pu00 (96 bytes)
[partition=7 key=[0, 0, 0, 0, 0, 0, 8, 138]] ev44 (16120 bytes)
[partition=1 key=[0, 0, 0, 0, 0, 0, 8, 139]] pu00 (96 bytes)
[partition=1 key=[0, 0, 0, 0, 0, 0, 8, 139]] ev44 (16120 bytes)