Log Message:
py-posting: update to 2.0.0.

## 2.0.0 [18th October 2024]

### Added

- **Scripting**: Run Python scripts before and after sending requests. Scripts \ 
can be used to perform setup, set variables, modify requests, and more.
    - Define "setup", "pre-request" and \ 
"post-request" Python functions and attach them to requests.
    - Posting will automatically reload these functions when they change, \ 
meaning you can edit them in an external editor while Posting is running.
    - Scripts can be used to directly manipulate the request, set variables \ 
which are used in the request (e.g. set a `$token` variable which is used in the \ 
request URL).
    - Output from scripts is captured and displayed in the "Scripts" tab.
- **Keymaps**: Change the default keybindings for any of Posting's \ 
"global" actions (e.g. sending request, opening jump mode, etc.) by \ 
editing `keymap` section of your `config.yaml` file.
- Added `heading.hostname` config to allow customisation of the hostname in the \ 
header. This field supports Rich markup. You may wish to use this to apply \ 
highlighting when `posting` is running on a production system vs a development \ 
environment, for example.
- Added `focus.on_request_open` config to automatically shift focus when a \ 
request is opened via the collection browser. For example, you might prefer to \ 
have focus jump to the "Body" tab when a request is opened.
- More detail and screenshots added to several sections of the guide.
    - Much more detail added to the "Getting Started" section.
    - Collections guide updated to explain more about the collection browser.
    - Guide for Keymaps added.
    - Guide for Scripting added.
    - Guide for External Tools added (integrating with vim, less, fx, etc.)
- `alt`+`enter` can now be used to send a request (in addition to the existing \ 
`ctrl+j` binding).
- Tooltips added to more actions in the app footer. These appear on mouse hover.

### Changed

- Automatically apply `content-type` header based on the body type selected in \ 
the UI.
- Updated to Textual 0.83.0
- Various refinements to autocompletion, upgrading to textual-autocomplete 3.0.0a12.
- Dependency specifications loosened on several dependencies.
- Recommended installation method changed from rye to uv.

### Fixed

- Fixed double rendering in "jump mode" overlay.
- Fixed sidebar not working on mobile on https://posting.sh
- Fixed autocompletion appearing when on 1 item in the list and the "search \ 
string" is equal to that item.