Implements Lin (2009) GMPE for Active Shallow Faults in Taiwan

Implements the GMPE of Lin (2009), which is presently being used for active shallow faults in Taiwan.

Includes implementation of GMPE as originally defined according to the author (test tables verified using fortran
code supplied by Chung-Han Chan and original authors), and additional implementation for the adjusted total sigma
terms reported in Cheng et al. (2013)