v0.20.1

This version enables functions to access constants declared at global level via the special global module.

Version 0.20.1 released to crates.io.

Bug fixes

• Fixed bug when position is zero in insert and split_at methods for arrays.
• Indexing operations with pure index values are no longer considered pure due to the possibility of indexers.

Breaking changes

• Dynamic::is_shared and Dynamic::is_locked are removed under the no_closure feature. They used to always return false.
• Engine::call_fn now evaluates the AST before calling the function.
• Engine::on_progress is disabled with unchecked.

New features

• A module called global is automatically created to hold global-level constants, which can then be accessed from functions.
• A new feature no_position is added to turn off position tracking during parsing to squeeze out the last drop of performance.

Enhancements

• The crate no-std-compat is used to compile for no-std. This removes the need to use a special crate::stdlib namespace for std imports.