Iblutil

Added

- method in spacer.Spacer for detecting signal times from a dictionary of TTL polarities and timestamps

Added

- CHANGELOG.md file added
- net package for communicating between acquisition PCs (3.9 support only)
- spacer module for task data alignment

Modified

- optional deep copy of Bunch
- get_logger renamed to setup_logger; level defaults to NOTSET; level of handlers not set