IQ-TREE version 1.5.3

Jan 16, 2017

Version 1.5.3 improves software stability. We thank a lot to all users mentioned below for the reports.

Bug fixes:

• Crash for +R+ASC model (reported by olaf.thalmann).
• Improper multiple restart for I+G model optimization (reported by 98w8h1).
• For large data sets with many sequences:
  • Incorrect handling of numerical underflow when all state likelihoods are zero (reported by Gerhard Jaeger).
  • Numerical underflow for invariant sites (reported by ledum_laconicum, kelly.schiro).

Other changes:

• Invariable (+I) site model now considers ambiguous constant sites.
• -wba (write bootstrap alignments) works now with standard bootstrap (-b).

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