Changelog 0.2.1

Added

Import CSV/Excel files – see https://docs.scrylab.de/docs/data-sources/#csv—excel
Warning before closing the app or loading a project while unsaved data sources would be lost.

Concatenated data source can be restored via project / restore session.
Concatenate now opens an operation dialog (like signal operations): reorder the data sources, add more via drag & drop and choose the time alignment (seamless/absolute) – available from a single selected source.
Unsaved data sources are no longer written into project/session files – save a source to include it.
Signal draw order is reversed: newly plotted signals now appear on top (like in matplotlib), in 2D and in the 3D stack. To bring a signal to the front, move it to the bottom of its plot’s signal tree.
The “Default Grid” setting is now a simple Off/On choice; previously saved per-axis values (X-Axis/Y-Axis/Both) count as On.

“Save As” no longer silently overwrites an existing file when the extension was omitted in the dialog.
Seamless concatenation now accounts for each source’s operations – a masked (cropped) source no longer leaves a gap before the next one.
Axis tick labels now show the right resolution: neighboring ticks no longer collapse to the same label (e.g. “1056 1056 1057”) and round values are written out instead of “1e+06”.
Deep zoom into data with large x/y-offsets (e.g. absolute timestamps) no longer stutters.
The “Default Grid” setting is applied again – new plots start with the grid on when set to “On”.
Grid, cursor and range toggles now show up immediately when triggered from the toolbar or keyboard while the mouse is not over the plot.