+ [ContextInformationList] added CONTAINS operator to _fulfils(contextInformation, operator, value)

# widgets will now be instantly queried when their interval is registered (instead of waiting a whole interval)

+ added UNEQUALS comparison operator

# By Tobias
# Via Tobias
* 'master' of https://github.com/University-of-Potsdam-MM/contactJS:
  Corrected a wrong synonym

# get value now returns a value of the correct data type if the keyword INTEGER, FLOAT or BOOLEAN are used (everything else is treated as STRING)

Merge branch 'development' of https://github.com/University-of-Potsdam-MM/contactJS into development

# By hjank (4) and Helena Jank (1)
# Via Helena Jank (1) and hjank (1)
* 'development' of https://github.com/University-of-Potsdam-MM/contactJS:
  Update README.md
  Update README.md
  Update README.md
  Update README.md
  # adjusted README to match latest changes

# [ContextInformation] added operator constants
# minor fixes

Merge branch 'development' of https://github.com/University-of-Potsdam-MM/contactJS into development

# [ParameterList] getItemAsJson uses forEach() now
# updated jsDoc
! [ Discoverer] getContextInformationWithNames(contextInformationNames) returned ContextInformation instead of ContextInformationList

# transferred shared functions from Widget and Aggregator into Queryable
# Aggregator doesn't inherit from Widget anymore

+ Queryable
+ Data
+ Service
- const.js
# Attribute -> ContextInformation
# AttributeList -> ContextInformationList
# updated the example Widget and Interpreter
# updated unit test to accommodate these changes
# [Aggregator, Interpreter, Widget] doesSatisfyTypeOf(contextInformation) -> doesSatisfyKindOf(contextInformation)
# [Interpreter, Widget] doesSatisfyKindOf(contextInformation) moved to Component
# [Widget] Widget(discoverer, attributes) -> Widget(discoverer)
# [Widget] sendToSubscriber(callback) -> _sendToSubscriber(callback)
# [ContextInformation] _type -> _dataType (getter/setter accordingly)
# [ContextInformation] equalsTypeOf(contextInformation) -> isKindOf(contextInformation) (_isTypeOf accordingly)
# [ContextInformation] equalsValueOf(contextInformation) -> equals(contextInformation)
# [ContextInformationList] putIfTypeNotContained(contextInformation) -> putIfKindNotContained(contextInformation)
# [ContextInformationList] containsTypeOf(contextInformation) -> containsKindOf(contextInformation)
# [ContextInformationList] containsValueOf(contextInformation) -> contains(contextInformation)
# [ContextInformationList] equalsTypesIn(contextInformationList) -> isKindOf(contextInformationList)
# [ContextInformationList] equalsValuesIn(contextInformationList) -> equals(contextInformationList)

+ [Attribute] added private constants _VALUE_UNKNOWN and _VALUE_ERROR (might add more specific error values later on)
+ [Attribute] setValueUnknown()
+ [Attribute] setValueError()
+ [Attribute] isKnown()
+ [Attribute] getSynonymWithName(name)
+ [Interpreter] _getExpectedInAttributes(attributes)
# [Attribute] withSynonym(translation) -> withSynonym(attribute)
# [AttributeList] fromAttributeDescription(discoverer, attributeDescription) -> fromAttributeDescription(discoverer, attributeDescriptions)
# [Interpreter] callInterpreter(inAttributes, outAttributes, callback) now retrieves the synonym expected by its inAttributeDescription
! [Widget] check if updateInterval is not undefined when starting the interval

# [Discoverer] _checkWidgetRequirements(theWidget) -> _checkComponentRequirements(theComponent)
! [Discoverer] fixed a bug where properties of required objects couldn't be found by_checkComponentRequirements()

Merge branch 'development' of https://github.com/University-of-Potsdam-MM/contactJS into development

# By Helena Jank (2) and hjank (1)
# Via Helena Jank (1) and hjank (1)
* 'development' of https://github.com/University-of-Potsdam-MM/contactJS:
  Update README.md
  # adjusted README to latest changes in components: inOut -> description, updateInterval
  # completed README, added contents

! [Discoverer] fixed a bug where Interpreters wouldn't searched for when a Widget was found that satisfies an attribute
! [Aggregator] fixed a bug where Interpretations would be called multiple time if a Widget returned more than one required attribute

Merge branch 'development' of https://github.com/University-of-Potsdam-MM/contactJS into development

+ [Aggregator] when receiving data from a Widget, Aggregators now search for an Interpretation in need for that information and will query the associated Interpreter
+ [Aggregator] queryReferencedInterpretation(theInterpretation, callback)
# [Widget, Interpreter] the static variable for the description of the component is now "description" (duh!) and not "inOut"
# [Widget] the description object now holds a variable "updateInterval"; it defines the update interval in milliseconds
# [Widget] if an update interval is given in the description the Widget will call its queryGenerator() method regularly
# updated some log messages
# updated some instance checks

# [Component] added more shared functionality from Widget, Aggregator and Interpreter

# [Aggregator] changed database initialization

+ [Component] added Component as superclass of all classes that are managed by the discoverer; duplicate functionality from Widget, Aggregator and Interpreter will be outsourced into Component in the future
+ [Component] Components and subclasses can use this.log() the create meaningful log messages referencing themselves
# [Storage] the constructor of Storage accepts a fourth parameter which is a reference to the Aggregator that created the Storage (is used for logging purposes)
# [Widget] the constructor won't override the name attribute if it's been already set
! [Widget] fixed a bug in addOutAttribute() where existing attributes were not updated with new values
+ added a new unit test for the translation functionality of the the discoverer