- stop using factory.py; just instantiate factories in filters.py...it's only a little extra code, and a lot less confusing
- copy 1-second ObsRio float data (e.g., F, UK*) to RawInput so it is available using EdgeFactory, and also so we have the option in the future to prune 10Hz data from EdgeCWB that has already been archived at IRIS.
- set up calls to _copy_channel to legacy sncls to be removed once Edge data migration is complete
- make all *_filter methods require an instantiated io factory, and set no default options
- other than the *temporary* write ports for copies of legacy sncl data, allow no default ports in filters.py; either accept the factory defaults, or force user to specify ports with call to geomag-filter app.

- better handle hour and day intervals in create_empty_trace
- enode_stream now handles "STEIM" encoding
- fixed bug in pad_and_trim_trace

- align timestamps more consistently for "update" intervals
- (related) add "interval" option to get_realtime_interval

- handle intervals other than 1s and 1m properly

    - configurable scale_factor and float vs. int conversion logic
    - configurable sncl_mode for different channel mapping
    - multiple read ports allowed for fail-over logic
    - generally more (if not perfectly) compatible with MiniSeedFactory

- configurable scale_factor and float vs. int conversion logic
- configurable sncl_mode for different channel mapping
- multiple read ports allowed for fail-over logic
- configurable write_encoding for setting miniseed data type
- generally more (if not perfectly) compatible with EdgeFactory

Better mapping of publication level to imag or imf. Compression and Fill Value constants. Code simplified.

accept and use file path is provided via --input-file argument, else try urlTemplates path. Network as a custom global attribute

Nonstand elements implemented. Temperatures un-implemented. no longer extends streamfactory on imagcdf input, parse string removed. basic is valid imagcdf logic.

tweaks to accept output_args. temperature-type elements as a nonstandard geomagnetic field element instead of as Temperature cdf variable