A relatively bulky collection of breaking, but mostly unavoidable, changes.

• Renamed memory instructions as proposed by the bulk-memory-operations spec:

  • current_memory -> memory.size
  • grow_memory -> memory.grow
  • move_memory -> memory.copy (still polyfilled)
  • set_memory -> memory.fill (still polyfilled)

• Moved memory management functions to the memory namespace as well:

  • allocate_memory-> memory.allocate
  • free_memory -> memory.free
  • compare_memory -> memory.compare

• Removed automatic inlining of constant globals and leaves them for Binaryen to decide (see WebAssembly/binaryen#1622)

• Improved 'const' enum compatibility. In turn can't export non-const enums anymore without mutable-globals explicitly activated

• Improved module-level export generation so these properly export all relevant nested elements, using the correct topmost name

• Enabled the @inline decorator for constant variables (for example used for NaN)

• Added ERROR, WARNING and INFO macros that emit a user-defined diagnostic when encountered

• Added experimental gc.iterateRoots builtin for potential use by a bundled GC

Feel free to dig through the changeset and point out strange things. It's likely that something broke.