Release of Elixir Version 1.15.0-rc.0

The latest release of Elixir, version 1.15.0-rc.0, brings a range of improvements, notably to compilation and boot time efficiency. It continues the trend from previous releases, and introduces caching and pruning of load paths, which speeds up the compilation process. This change means that project dependencies are treated more like they are in a production setting, with a closer behavior to 'mix release'. With Erlang/OTP 26, the benefit is further compounded by allowing applications to start concurrently and cache code path lookups, potentially reducing boot time between 5% and 30% when starting interactive Elixir or running tests. Compiler optimizations include smarter handling of '@behaviour' declarations and more efficient tracking of external resources. Additionally, the new release enhances integration with Erlang/OTP's logger, offering out-of-the-box features such as log rotation and file logging. A notable change for developers is the compiler can now issue multiple errors before aborting compilation, providing more feedback during development.