Removed aliby.utils, postprocessor.core/functions and multisignal
and processes.

When processing zarr files with no access to OMERO, OMERO_channels
specifies the correct channels in the correct order, which may
differ from position to position and be incorrect in the meta data,
which is for all positions.

Ensure tps is an int.

metadata functions for finding image sizes moved to image.

Prevent parsing failing on some log files.

For both old and new log files, we now also search the parent directory for
the log file.
For pipeline, OMERO_channels can be specified explicitly.

To ensure INFO logs are printed to the screen.

Data now passed with x and y in the correct order;
References to session removed from BabyParameters

Read the order of the channels from OMERO and impose this order
on tiler to prevent Brightfield being misidentified.

babywriter's overwrite variable must be a list.

Multiprocesssing now uses the standard pathos syntax and automatically
assigns the number of cores available on a machine.

session is not used by tensorflow 2.

Some functionality lost, but the original is fullpipeline.py.