IQ-TREE version 1.6.6

This version contains a number of bugfixes and is highly recommended for all users.

Bugfixes:

• Issue with internal tree node names changed from slash to underscore (reported by JP Flandrois).
• Wrong FREQ_UNKNOWN assertion with protein mixture models, e.g. LG4X (reported by Giddy Landan).
• Disallow specifying both --runs with -lmap option (reported by Giap Nguyen).
• Reading nexus polymorphic characters for non-DNA data (reported by a web user).
• Amino-acid O (22nd amino-acid) is accepted as missing data (reported by Cuong Dang).
• Negative initial free-rates in rare cases (reported by Paul Frandsen).
• Memory leak in reading NEXUS alignment.
• Crash with resampling strategy (-bsam) for standard bootstrap (-b) and jackknife (-j option).
• Crash with standard bootstrap and partition merging (-m ...MERGE) (reported by Guoqing Li).
• Wrong error with codon models and -t RANDOM (reported by Karen Meusemann).
• Parsing error with blank chars in partition file (reported by David Maddison).
• Freezing caused by old Intel OpenMP library (reported by David Maddison).
• Too strict assertion about one applied NNI (reported by Karen Meusemann).
• Error message when specifying mixture with GHOST model (reported by Anja Spang).