Up to version 1.3.0

Prevent the multiple initialization introduced on ede16b5 and fix log…

…ic error on 4274405

Replace mutation name to camelcase

Added option to ignore syncing on desired mutations

Closes MitsuhaKitsune#23

Up to v1.2.7

Performance: Remove redundant conversion to string on persistent states

Performance: Remove check to improve response times on persistent sta…

…tes save

Closes MitsuhaKitsune#10

Up version to 1.2.4

Add pending mutations queue for mutations committed before the sync w…

…ith the background

Fix persistent states initialization when localstorage don't have dat…

…a yet

Closes MitsuhaKitsune#7