v3.0.4

Fixes

a6ec1e6 fix: cannot remove multiple column at once
c91f35d fix: replace current route after inserting workbook
b2b9fc2 fix: cannot compare timestamp and string literal
94193eb fix: sanitize old measure names to prevent breaking existing queries/charts
0903d0f fix: show better error message if a step fails
0207457 fix: site db data source
e579078 fix: cannot remove series from y-axis
ab503a4 fix: log error and throw a generic message if previewing failed

Full Changelog: v3.0.3...v3.0.4