matched headings with bc-lifehash

Author: shannona

README.md

@@ -22,19 +22,19 @@ After the pattern becomes stable (or begins repeating) the resulting history is
 
 Some bits of the initial hash are then used to deterministically apply symmetry and color to the icon to add beauty and quick recognizability.
 
-#### Implementations
+## Implementations
 
 | Type | Name | Language | Note |
 |------|------|----------|------|
 | Reference | [bc-lifehash](https://github.com/BlockchainCommons/bc-lifehash) | C++/C
 | Reference | [LifeHash](https://github.com/BlockchainCommons/LifeHash) | Swift
 | Reference | [LifeHash](https://github.com/BlockchainCommons/LifeHash) | Mathematica/Wolfram Language | `version1` only
 
-#### LifeHashTool Command Line Tool
+## Command-Line Tools
 
 [LifeHashTool](https://github.com/BlockchainCommons/LifeHashTool) is a command line tool written in Swift that generates LifeHash images as PNG files.
 
-#### LifeHashes In Five Flavors
+## LifeHashes In Five Flavors
 
 * **`version1`** The Original. **DEPRECATED**
 * **`version2`** Bug fixes and CMYK-friendly.
@@ -44,19 +44,19 @@ Some bits of the initial hash are then used to deterministically apply symmetry
 
 ⚠️ **NOTE:** The images generated by LifeHash from a given seed will not be recognizably similar between each of these versions. So pick the one you want to use for your application and stick with it!
 
-##### Version 1 (DEPRECATED)
+### Version 1 (DEPRECATED)
 ![LifeHash Example](Art/version1.jpg)
 
-##### Version 2
+### Version 2
 ![LifeHash Example](Art/version2.jpg)
 
-##### Detailed
+### Detailed
 ![LifeHash Example](Art/detailed.jpg)
 
-##### Fiducial
+### Fiducial
 ![LifeHash Example](Art/fiducial.jpg)
 
-##### Grayscale Fiducial
+### Grayscale Fiducial
 ![LifeHash Example](Art/grayscale-fiducial.jpg)
 
 ### From the "LifeHash Example" demo app:
@@ -77,7 +77,7 @@ Some bits of the initial hash are then used to deterministically apply symmetry
 
 ![Samples of LifeHash](Art/Samples-0-Mathematica.jpg?raw=true "Samples 0") 
 
-## Tips for Presenting LifeHash Images
+### Tips for Presenting LifeHash Images
 
 * Don't vignette or round the corners of a LifeHash image, every pixel contributes to the security of the image, so show the image as a square. If you *really* want to round the corners, make the radius small enough to still show the corner pixels.
 * Don't interpolate or blur a LifeHash image: show every pixel crisply. On iOS UIKit this is accomplished by setting `layer.magnificationFilter = .nearest` on a `UIImageView`. Under SwiftUI you call `myImage.interpolation(.none)`. The iOS LifeHash library already does this for you.