WdfFileReader Class

public class WdfFileReader

The wdf file format is separated into several DataBlocks, with starting 4-char 
  strings such as (incomplete list):
    `WDF1`: File header for information
    `DATA`: Spectra data
    `XLST`: Data for X-axis of data, usually the Raman shift or wavelength
    `YLST`: Data for Y-axis of data, possibly not important
    `WMAP`: Information for mapping, e.g.StreamLine or StreamLineHR mapping
    `MAP `: Mapping information(?)
    `ORGN`: Data for stage origin
    `TEXT`: Annotation text etc
    `WXDA`: ? TODO
    `WXDM`: ? TODO
    `ZLDC`: ? TODO
    `BKXL`: ? TODO
    `WXCS`: ? TODO
    `WXIS`: ? TODO
    `WHTL`: Whilte light image
    Following the block name, there are two indicators:
    Block uid: int32
    Block size: int64
    Args:
    file_name(file) : File object for the wdf file
   Attributes:
    title(str) : Title of measurement
   username(str) : Username
  application_name(str) : Default WiRE
    application_version(int,) * 4 : Version number, e.g. [4, 4, 0, 6602]
   measurement_type(int) : Type of measurement
                             0=unknown, 1=single, 2=multi, 3=mapping
    scan_type(int) : Scan of type, see values in scan_types
   laser_wavenumber(float32) : Wavenumber in cm^-1
    count(int) : Numbers of experiments(same type), can be smaller than capacity
  spectral_units(int) : Unit of spectra, see unit_types
    xlist_type(int) : See unit_types
    xlist_unit(int) : See unit_types
    xlist_length(int) : Size for the xlist
    xdata(numpy.array) : x-axis data
    ylist_type(int) : Same as xlist_type
    ylist_unit(int): Same as xlist_unit
   ylist_length(int): Same as xlist_length
  ydata(numpy.array): y-data, possibly not used
 point_per_spectrum(int): Should be identical to xlist_length
data_origin_count(int) : Number of rows in data origin list
capacity(int) : Max number of spectra
    accumulation_count(int) : Single or multiple measurements
    block_info(dict) : Info block at least with following keys
                       DATA, XLST, YLST, ORGN
                        # TODO types?