Various fixes for HDF export * Support string data * Fix export of timestamps * Fix export of group and channel attributes
0.20.0
* Implement lazy reading of whole channel data * Implement thermistor scaling * Performance improvement for TDMS files with alternating channels in segments
0.12.0
* Add option for saving to hdf5 file under a group. * Support polynomial scaling with an arbitrary number of coefficients. * Fix warning about use of deprecated method when exporting to Pandas dataframe. * Fix reading number of values in DAQmx raw data.