include a value

[aronsho]

Default:

• estrapolate to M = 0, yearly
• include option for general M and not yearly

[RitzVanille]

TODO Aron:

• m0 should be renamed to mref to avoid confusions with magnitude zero or smallest triggering event or moment
• time should be given as one single number (e.g. number of years in your catalogue; or number of seconds in your lab sample). Retire Tref to remain agnostic.
• default when no Mref given should be Mc