add get() method options parameter
Merge pull request #197 from m0t0r/refactor/chromestorage-api-get

add get() method options parameter
Merge pull request #199 from eHealthAfrica/develop

merge 0.5.0
Merge pull request #201 from eHealthAfrica/master

sync commit history (pull request artefact)
0.6.0
Merge pull request #202 from eHealthAfrica/task/bump_v060

0.6.0