Version 2.7

This release supports the new Apple Mx (ARM) chips and Linux (ARM) chips.

Major Features:

A new option "-l" is added to assign the starting rate matrix.

For example:
./HAL2 data.phy tree.txt -l 1,1,1,1,1,2,1,1,2,2,2,2,2,2 -r data.NEW-BU.chkpt.txt

The above command recovers from the check-point file data.NEW-BU.chkpt.txt and starts the iteration from the rate matrix: 1,1,1,1,1,2,1,1,2,2,2,2,2,2