Parameterize fixed export strings
Add importOps.cutString_ and .HTML2data_
Fix description of importOps.HTML2data_
Fix column number bug in uiOps.delCol
Add importOps.importHTML
Improve error messages in importOps.HTML2data_
Add eventOps.importHTML and import button
Merge branch 'import_data'
Release v0.9.0: import waveform data back from exported text