Parley work (#130)

PR to integrate parley and font variants.

PR should close #101 .

Using this zulip thread for more direct commuication:
https://xi.zulipchat.com/#narrow/channel/205635-parley/topic/.E2.9C.94.20Parley.2C.20layout.20context.2C.20bevy.20and.20multiple.20cores/with/507732907

---------

Co-authored-by: Spencer C. Imbleau <spencer@imbleau.com>

Author: RobertBrewitz

.typos.toml

@@ -11,6 +11,7 @@
 
 # Match Inside a Word - Case Insensitive
 [default.extend-words]
+wdth = "wdth"
 
 [files]
 # Include .github, .cargo, etc.

CHANGELOG.md

@@ -15,6 +15,14 @@ You can find its changes [documented below](#071---2025-03-12).
 
 This release supports Bevy version 0.15 and has an [MSRV][] of 1.85.
 
+### Changed
+
+- Replaces `skrifa` with `parley`, which is the preferred shaping library in the linebender ecosystem.
+- Changes `VelloFont` struct internals.
+- A `parley::FontContext` and `parley::LayoutContext` has been added in a lazy load multi threaded capacity.
+- Replaces `Rubik-Medium.ttf` from the `text` example with variable font `RobotoFlex-VariableFont_GRAD,XOPQ,XTRA,YOPQ,YTAS,YTDE,YTFI,YTLC,YTUC,opsz,slnt,wdth,wght.ttf`.
+- Updates the `text` example with an interactive, keyboard controlled, variable font example.
+
 ## [0.7.1] - 2025-03-12
 
 This release supports Bevy version 0.15 and has an [MSRV][] of 1.85.