Allow locking scroll position on HexView (fixes #32)

Author: ethteck

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "bdiff"
-version = "0.6.0"
+version = "0.7.0"
 edition = "2021"
 authors = ["Ethan Roseman <[email protected]>"]
 license = "MIT"
@@ -18,6 +18,7 @@ argh = "0.1.12"
 dtoa = "1.0.9"
 eframe = { version = "0.23.0", features = ["persistence"] }
 egui-modal = "0.2.5"
+egui-phosphor = "0.3.0"
 encoding_rs = "0.8.33"
 iset = "0.2.2"
 log = "0.4.20"