Added equals() and hashcode() to TADecimal
Switching doubles for TADecimals in indicators
Merge branch 'master' of https://github.com/mdeverdelhan/ta4j

Conflicts:
	ta4j/src/main/java/eu/verdelhan/ta4j/strategies/IndicatorOverIndicatorStrategy.java
	ta4j/src/main/java/eu/verdelhan/ta4j/strategies/ResistanceStrategy.java
	ta4j/src/test/java/eu/verdelhan/ta4j/strategies/IndicatorOverIndicatorStrategyTest.java