Merge branch 'i124_bug_in_zooming_in_overlap' of https://git.passcal.nmt.edu/software_public/passoft/sohstationviewer into i124_bug_in_zooming_in_overlap

Change to use matplotlib's lim for zooming

See merge request !145

remove checking for ax_wf in WaveforWidget.plot_single_channel() because checking for key ax_wf in plotting_data1's channel and remove artist only necessary when replotting a channel

checking for key ax in plotting_data1's channel and remove artist only necessary when replotting a channel

plot SOH channels in user's order

Closes #110

See merge request !128

fix bug lacking of chan_db_info argument when calling set_axes_ylim()

Closes #121

See merge request !144

set_axis_info: remove clear labels at the beginning because with lim for zooming, we don't recreate axis for each zoom; add labels for total of data point as attribute for ax to do set_text when there are changes for the total

Fix Gps issues

See merge request !141

Change read_mseed_channels to use MSeed's RecordReader and apply is_multiplex

See merge request !140

perform finalize only once after data loaded

See merge request !142

fixing displayed extreme values for channels

Closes #104 and #96

See merge request !120

connect GUI to new mseed

See merge request !138

handle no known data detected

See merge request !137

combine get wf plot info to get chan plot info

Closes #112

See merge request !131

write new mseed that use record_reader for fast and simple data

See merge request !134

display tracking info when start reading new files

Closes #102

See merge request !127

save plot as a file

Closes #60

See merge request !106