Model for epochs with variable migration and coalescence rates back in time.
Results of simulating and analysing 100Mbp segments.
Merge branch 'feature/psmc_simulations' of https://github.com/mailund/IMCoalHMM into feature/variable_migration_model
Initial script
Changed option parser to argparse

The opt parser package is deprecated
Reading alignments for all three configurations.
Merge branch 'feature/variable_migration_model' into develop