Bump version to 0.29.0

This change bumps the crate to version 0.29.0. The following notable
changes have been made since 0.28.0:
- Renamed various request related types to follow more uniform naming
  scheme
- Added api::v2::{calendar::ListReqInit,watchlist::CreateReqInit} types
- Removed api::v2::{order::ChangeReqInit,assets::ListReqInit} types in
  favor of Default impl for corresponding request types
- Made various types non-exhaustive
- Added name attribute to api::v2::watchlist::Watchlist type
- Added support for updating a watchlist

Author: d-e-s-o

CHANGELOG.md

@@ -1,5 +1,5 @@
-Unreleased
-----------
+0.29.0
+------
 - Renamed various request related types to follow more uniform naming
   scheme
 - Added `api::v2::{calendar::ListReqInit,watchlist::CreateReqInit}`

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "apca"
-version = "0.28.0"
+version = "0.29.0"
 edition = "2021"
 rust-version = "1.63"
 authors = ["Daniel Mueller <deso@posteo.net>"]