ssande7

Results 2 issues of ssande7

This PR adds an `array.reserve(axis, additional)` method for use when appending multiple times to an array. It abstracts over the code in `append` that was calling `OwnedRepr::reserve` in order to...

**Summary** This PR updates `fix nvt/sllod`, `fix deform`, and `compute temp/deform` (and some other associated code) for stable integration of the equations of motion in a way which is reversible...

enhancement