- Add GQRS ECG peak detectors

- Change and append plotrec input argument format
- Add 'signame' and 'sigsegments' attributes to MultiRecord class.
- Add shiftsamps input argument for rdann

- Enable reading/writing integer fs to headers and annotations when f…

…loat value is close enough

- Fix fs writing in wrann
- Add auto conversion to only write necessary annotation file bytes

- fix setup script

- add write functionality for custom ann types
- fix custom anntype reading
- fix problems with annotation writing

- Add capabilities to read and write all samples in records with mult…

…iple samples/frame

- Large refactor of _signals.py functions for reading dat files
- Reorganize tests and create additional ones for new functionality
- Create subfolders within package

setup version

fix gain=0

fix wfdb multi-segment reading and added new unit tests

doc

pip installable through pypi