Update the default priors to our standard choices

bilby/gw/prior_files/aligned_spins_waveform_tides_off.prior

 chirp_mass = Uniform(name='chirp_mass', minimum=3.56, maximum=3.68)
 mass_ratio = Uniform(name='mass_ratio', minimum=0.05, maximum=1)
-mass_1 = Constraint(name='mass_1', minimum=1.00, maximum=22.0) #optional
-mass_2 = Constraint(name='mass_2', minimum=1.00, maximum=2.95) #optional
+mass_1 = Constraint(name='mass_1', minimum=1.00, maximum=22.0)
+mass_2 = Constraint(name='mass_2', minimum=1.00, maximum=2.95)
 chi_1 = bilby.gw.prior.AlignedSpin(name='chi_1', a_prior=Uniform(minimum=0, maximum=0.5))
 chi_2 = bilby.gw.prior.AlignedSpin(name='chi_2', a_prior=Uniform(minimum=0, maximum=0.05))
 luminosity_distance = bilby.core.prior.PowerLaw(alpha=2, name='luminosity_distance', minimum=1, maximum=750, unit='Mpc')
 ra = Uniform(minimum=0, maximum=2 * np.pi, name='ra',  boundary='periodic')
 dec = Cosine(name='dec')
-cos_theta_jn = Uniform(name='cos_theta_jn', minimum=-1, maximum=1)
+theta_jn = Sine(name='theta_jn')
 psi = Uniform(name='psi', minimum=0, maximum=np.pi, boundary='periodic')
 phase = Uniform(name='phase', minimum=0, maximum=2 * np.pi, boundary='periodic')