Harden style changes#568

Merged

LukasPaczos merged 3 commits intomasterfrom

558-native-crash-on-style-reload

Jul 6, 2018

Commits on Jul 3, 2018

[LLP] - split state flags into enabled, plugin started and layer started
LukasPaczos
committed
[LLP] tests for robustness of style changes while data is being provided
LukasPaczos
committed

Commits on Jul 6, 2018

[LLP] always check if the layer/source exists in core before updating it
LukasPaczos
committed