- 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