v1.3.4

Added sequence cropping to accomodate very long outlies.
Previously, learnMSA would be very slow, if the input includes sequences many times longer than the average. This release provides a fix by implementing the command line option --crop x to crop inputs longer than x (defaulting to 3 times the average). Cropping can be disabled (the original behavior) with --crop disable.
Cropping does only affect model training, not the decoded MSA which will always respect the full input.