Autodetect wave_table type; remove env_plot parameter

This version automatically detects if the wave_table is a synthio.waveform or synthio.Envelope object. The UI was updated to remove the env_plot parameter.

Update docs for envelope plot UI change

1.2.1

update docs

Add synthio.Envelope Display Object

Adds an initialization parameter to select a synthio.Envelope plot or a synthio.waveform wave table plot. The initialization UI now includes a default envelope_plot=False for plotting a wave table. Setting it to True and providing the synthio.Envelope object as the wave_table will display an envelope plot in the specified window.

Add Automatic Scaling Property

Include a property to select whether automatic plot scaling is enable or disabled. When disabled, the plot scale is set to the maximum signed 15-bit value of 32767. When enabled, the plot scale is set by the maximum value in the wave table.

Add wave_table get/set; improve auto display scale algorithm

Added a wave_table property so the displayed waveform could dynamically change. Also improved the automatic display scale algorithm to properly display zero-filled arrays.

Add animated example; update docs

Added an animated example using new read-only properties. Updated the documentation accordingly.

Change from Group to TileGrid inheritance

To simplify and reduce memory usage, the inherited super class was changed from displayio.Group to displayio.TileGrid.

Reduce Memory Usage and Simplify Code

Convert the drawing schema from a set of line segments to an open polygon.

Improve bitmap resolution; fix y-axis scaling

Improve bitmap resolution: remove debug artifact that arbitrarily skipped source samples.
Fix y-axis scaling: Determine scale factor from extracted samples that are plotted rather than source samples that might be skipped during extraction.

Initial release

1.0.0

initial repo load