Fatal error UngappedSeq != m_UngappedSeqs[0] from efa_explode on resampled MSAs

[rcedgar]

This is a bug in the current code, I hope to post a fix in the next few days. Work-around is to write a script in python or similar -- it's pretty simple to read through the EFA file one line at a time. If the first character in the line is '<', start writing to a new file where the filename is the rest of this line (i.e. with '<' deleted).

[TongZhou2017]

Same error while resampled sequence without gap