v2.2.0-rc.3

Bugfixes:

• fixes chunk loading in old IEs
• fixes error which prevented using arrow functions in require.ensure (ccfc608)
• fixes bug when passing function to rules.use (44baa7c)
• fixes bug for --progress output (0636e7c)
• fixes bug with export * and non-harmony modules (ee3d53c)
• fixes bug when removing assets from the compilation (cb4c209)