Freeze apollo-cache and apollo-cache-inmemory versions

One of the upstream dependencies brought a change in configuration that this package relied on (apollographql/apollo-client@8200d31#diff-f5213f6854434423f284afb3e369280f).
With this release, the apollo-cache and apollo-cache-inmemory versions have been frozen until a more permanent solution is done.

Remove self-managed store

Remove self managed store (#18)

Redux store must now be created externally and passed to the constructor.

Remove overwrite on constructor

Remove overwrite on constructor (#17)

Remove initial data from ReduxNormalizedCache and factory.

0.1.0-alpha.7: Reduce number of write actions (#11)

* one arg with all options

* improve readme; bump version

* version bump

0.1.0-alpha.6: All options in one arg (#10)

* one arg with all options

* improve readme; bump version

0.1.0-alpha.5: Fix args to the cache; Improve readme (#9)

* pass store and reduxRootSelector; improve readme

* pass options to ReduxNormalizedCache; add ReduxNormalizedCache tests

* document 1st arg

* improve readme

* bump

0.1.0-alpha.4: Redux normalized cache (#8)

* rewrite Redux stuff as a NormalizedCache

* fix constructor

* use latest apollo-cache-inmemory

* clean up

* bump

* update package-lock

* bump