BPReveal 4.1.4
Locked the tensorflow version to 2.15, since the change in Keras version in 2.16 caused all sorts of breakage.
Due to the tensorflow update being a breaking change, old releases of BPReveal will no longer create a valid environment.
Added a tool to shift PISA data, mostly useful for mnase data.
Added a very performant metapeak calculator to bedUtils.
Lots of little bug fixes.