insta-fun 0.2.1

Snapshot testing of fundsp units. Visualize output in svg and compare using insta
Documentation 
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# insta-fun

SVG snapshot testing for FunDSP audio units.

Generate visual snapshots of audio processing units to catch regressions and verify signal behavior.

![Example](example.png)

> **Note:** Snapshot assertion uses `insta::assert_binary_snapshot` which is currently experimental.

## Usage

```rust
use insta_fun::prelude::*;
use fundsp::prelude::*;

#[test]
fn example_test() {
    // Simple snapshot
    let unit = sine_hz::<f32>(440.0);
    let svg = snapshot_audio_unit(unit);

    // With input signal
    let filter = lowpass_hz(1000.0, 1.0);
    let svg = snapshot_audio_unit_with_input(filter, InputSource::impulse());

    // Custom configuration
    let config = SnapshotConfigBuilder::default().num_samples(100).build().unwrap();
    let svg = snapshot_audio_unit_with_options(sine_hz::<f32>(440.0), config);

    // With a macro
    let unit = sine_hz::<f32>(440.0);
    assert_audio_unit_snapshot!(unit);
}
```

## Features

- Visualizes audio unit inputs and outputs as SVG waveforms
- Supports multi-channel audio with color-coded traces
- Configurable sample count, SVG dimensions, and processing modes
- Built-in input generators (impulse, sine, custom)
- Batch or tick-by-tick processing
- Assertion macro

## Processing Modes

- **Tick**: Process one sample at a time (default)
- **Batch**: Process up to 64 samples at once for efficiency

## The Unlicense

See [LICENSE](./LICENSE) file for details.