Expanding wildcard exports to allow code to be used with Closure Comp…

[nosachamos]

…iler in advanced mode.

Expanding wildcard exports in the main TS file to allow the @ngrx/core library to be processed by the Closure Compiler in ADVANCED_OPTIMIZATIONS mode. GCC doesn't support wildcard exports.

So this change expands those wildcards and makes this library closure-friendly given that ES6 > Closure will be the preferred production build pipeline for Angular 4x apps.