BUG: Replaced default parameter [] by None and made some simplifications#9

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che85 wants to merge 3 commits into

ChannelIQ:masterfrom

che85:fixMutableParameter

Commits on Oct 20, 2016

BUG: For preventing unexpected behavior while executing are_same, contains or json_are_same several times, setting lists to None instead of []
che85
committed
ENH: Refactoring and simplified code
che85
committed
ENH: Added missing keys to Stack
che85
committed