Source phase terminology

[guybedford]

Renames the proposal to "Module Source Imports", using the terminology of this being a module phase as opposed to using the reflection term.

Syntax is updated from import module x from 'x' to import source x from 'x' using the phase attribute for dynamic import.

Cross-references are updated accordingly.

[Jack-Works]

sorry, can you clarify the term we're using now? I'm a bit confused.

• unparsed file: asset
• parsed but unlinked module (can link manually): ?
• parsed and linked module (can feed to importHook): ?
• executed module: normal import