Release v1.6.0 · rhaiscript/rhai

This version, in particular, fixes a plugin macro hygiene error for the nightly compiler:

error[E0425]: cannot find value `args` in this scope

rhai_codegen needs to be version 1.4.0. Run cargo update if it is a lower version.

Compiler version

Fixed macro hygiene error with nightly compiler.
Invalid property or method access such as a.b::c.d or a.b::func() no longer panics but properly returns a syntax error.
Scope::is_constant now returns the correct value.
Exporting a variable that contains a local function pointer (including anonymous function or closure) now raises a runtime error.
Full optimization is now skipped for method calls.

Type aliases in plugin modules are now used as friendly names for custom types. This makes plugin modules more self-contained when they are used to define a custom type's API.

Variable definitions are optimized so that shadowed variables are reused as much as possible to reduce memory consumption.
FnAccess and FnNamespace now implement Ord and PartialOrd.
The event_handler_map example is enhanced to prevent shadowing of the state object map.
Separation of constants in function calls is removed as its performance benefit is dubious.
A function sleep is added to block the current thread by a specified number of seconds.
Scope::set_alias is added to export a variable under a particular alias name.
starts_with and ends_with are added for strings.
Variables in modules registered via register_global_module can now be accessed in the global namespace.
Dynamic::into_read_only is added to convert a Dynamic value into constant.
Module now holds a collection of custom types with an API.