pconvert-rust 0.4.3

Rust version of P(NG)Convert, a simple PNG conversion tool.
Documentation 
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# Web Assembly (WASM)

## Source files

* [`mod.rs`](./mod.rs)
  * exposes the WASM module API to be used within JavaScript files that target the web browsers

* [`benchmark.rs`](./benchmark.rs)
  * exposes the WASM module benchmark API to be used within JavaScript files that target the web browsers
  * prints measured times to the console

* [`conversions.rs`](./conversions.rs)
  * type conversions from and to JavaScript types

* [`utils.rs`](./utils.rs)
  * decode/encode PNG functions
  * other utility functions and macros

## JavaScript API

```javascript
// blends two File objects and returns a File object
blendImages(bot, top, target_file_name, algorithm, is_inline, options)

// blends two ImageData objects and returns an ImageData object
blendImagesData(bot, top, algorithm, is_inline, options)

// blends multiple File objects and returns a File object
blendMultiple(image_files, target_file_name, algorithm, algorithms, is_inline, options)

// blends multiple ImageData objects  and returns an ImageData object
blendMultipleData(images, algorithm, algorithms, is_inline, options)

// returns a JSON of module constants (e.g. ALGORITHMS, FILTER_TYPES, COMPILER_VERSION, ...)
getModuleConstants()

// benchmarks and prints to console various times for different combinations of blending algorithms, compression algorithms and filters for `blendImages`
blendImagesBenchmarkAll(bot, top, is_inline)

// benchmarks and prints to console various times for different combinations of blending algorithms, compression algorithms and filters for `blendMultiple`
blendMultipleBenchmarkAll(image_files, is_inline)
```