0.4.0

Introduced a new view Threads, which relies on the Logstash's hot-threads API to display the busiest threads and their traces.
Added the User-Agent header to requests so the source can be identified.
Minor UI fixes.

0.3.0

Bumped a few dependencies.
Added a command option (diagnostic-path) to poll the data from a Logstash diagnostic path.
Improved compatibility with older Logstash versions (7.x), which graph API is not supported.
The pipeline components view now shows the plugin's pipeline usage and the dropped events percentages.
Added a few plugin's extra details on the pipeline view.

Added a new flows view built on top of the latest Logstash flow metrics.
BREAKING: Renamed the view command to tui.
Changed to execute the tui command by default when no specific command is supplied.
Migrated from tui to ratatui and bumped a few dependencies.
Changed pipelines charts to continuously aggregate data, even if the chart isn't being displayed.
Added worker millis per event chart on the pipeline's plugin details.
Reorganized TUI shortcuts and other design changes.
Added license file