+ utils/network.thres*_baseline(): support both date12_list format
+ plot_network: correct labels for offset SNR

+ reference_date: support HDF5 file as input for --ref-date option, in addition to existing input types

+ utils1.update_template_file(): bug fix when the exiting key value contains *, by treating it as a normal character, instead of wildcard

+ view.update_data_with_plot_inps():
   - support spatial referencing on the fly with the reference point out of the subset box, for time-series file only.
   - check ref_val before re-referencing and ignore maskedout or nan ref_val

+ (ts)view: pass print_msg to auto_adjust_colormap_lut_and_disp_limit()

+ tsview: remove _ in default outfile base

+ utils0: add polygon2mask() to convert a polygon into a binary mask file.

+ deramp: change mask_in from required to optional with default as None

+ smallbaseApp.plot_results(): move opt common to the front for better alignment in the printout msg

+ defaults/smallbaselineApp.cfg: fix typo for recommended

+ ts2vel: linalg.lstsq add default rcond to avoid warning msg

+ readfile.read_gdal_vrt():
   - add X/Y_FIRST/STEP for all coordinate types
   - add UTM_ZONE for file in UTM projection
   - add X/Y_UNIT in meters/degrees

+ prep_hyp3: use readfile.read_gdal_vrt() to replace add_geospatial_metadata() for less rerdundancy and the new UTM_ZONE attribute

+ prep_gmtsar: codacy suggestion

+ view: support file in UTM projection by default
   - support native matplotlib display in geo-coord via setting extent arg for files in UTM projection
   - remove the redundant and obsolete code block in plot_slice() for coord unit of 'm'
   - untie --coastline and --lalo-label option because cartopy seems to solve the previous default blank ticks issue
   - raise exception for --lalo-label for file in UTM projection
   - add code to auto determine the map projection for files with coord unit of deg and meter.

+ utils/plot.draw_scalebar(): add unit arg to support coordinate unit of meters

+ utils/arg_group.add_map_arg*(): comment out --proj option because we can not really plot the raster image in a map projection that is different from the native image data projection/transform using cartopy, at least not in the non-global scale