chore: Bump version to 0.7.3-beta

This commit increments the application version for the next release.

*   `app.versionName` is updated from `0.7.2-beta` to `0.7.3-beta`.
*   `app.versionCode` is updated from `44` to `45`.

feat(audiobookshelf): Implement shared element transitions and improv…

…e MiniPlayer UI

This commit introduces `SharedTransitionLayout` to provide a seamless visual transition for audiobook covers between the MiniPlayer and the full Audiobookshelf Player screen. It also refactors the MiniPlayer with a modern design, including swipe-to-dismiss functionality and dynamic background coloring.

### Key Changes:

*   **`MainNavigation.kt`**:
    *   Wrapped the root `NavHost` and `MiniPlayer` in a `SharedTransitionLayout` to enable shared element transitions.
    *   Updated the `audiobookshelf/player/` route and `MiniPlayer` call sites to pass the required `AnimatedVisibilityScope`.

*   **`MiniPlayer.kt`**:
    *   **Shared Element**: Added `sharedElement` modifier to the book cover image for smooth transitions.
    *   **UI Redesign**: Replaced the linear progress bar with a dynamic "fill" effect where the background color (derived from the cover) expands behind the content based on playback progress.
    *   **Interactions**: Implemented `SwipeToDismissBox` to allow users to close the mini player by swiping.
    *   **Visuals**: Switched the cover shape to `CircleShape`, added a `basicMarquee` effect to the title when playing, and increased elevation/shadows for better depth.

*   **`AudiobookshelfPlayerScreen.kt`**:
    *   Updated the screen and its content components (`PortraitPlayerContent`, `LandscapePlayerContent`) to support `SharedTransitionScope`.
    *   Added the matching `sharedElement` modifier to the cover art in both portrait and landscape layouts to complete the transition pair with the MiniPlayer.

*   **Formatting**:
    *   Performed minor indentation and code style adjustments across modified files.

chore: Bump version to 0.7.1-beta

This commit increments the app version for the next release.

- `app.versionName` updated to `0.7.1-beta`.
- `app.versionCode` updated to `43`.

docs: Update README and mark Chromecast support as complete

This commit updates the `README.md` file to mark Chromecast support as a completed feature in the project roadmap. It also includes various minor formatting adjustments to improve readability, such as re-wrapping text and standardizing spacing.

chore: Bump version to 0.6.5-beta

This commit increments the app version for the next release.

- `app.versionName` updated to `0.6.5-beta`.
- `app.versionCode` updated to `41`.

chore: Bump version to 0.6.4-beta

This commit increments the app version for the next release.

- `app.versionName` updated to `0.6.4-beta`.
- `app.versionCode` updated to `40`.

chore: Bump version to 0.6.3-beta

This commit increments the app version for the next release.

- `app.versionName` updated to `0.6.3-beta`.
- `app.versionCode` updated to `39`.

chore: Bump version to 0.6.2-beta

This commit increments the app version for the next release.

- `app.versionName` updated to `0.6.2-beta`.
- `app.versionCode` updated to `38`.

chore: Bump version to 0.6.1-beta and adjust UI spacing

This commit increments the app version for the next release and makes a minor UI adjustment in the item header.

### Key Changes:

*   **`gradle.properties`**:
    *   `app.versionName` updated to `0.6.1-beta`.
    *   `app.versionCode` updated to `37`.
*   **`ItemHeader.kt`**:
    *   Increased the vertical spacing below the series/author text from `4.dp` to `8.dp` for better visual separation.

Merge pull request #46 from MakD/audiobookshelf-support

Audiobookshelf support