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1.0 Release Candidate 2 - May 2013
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* Changed targetNamespace for Package "«ApplicationSchema» OPM" to: http://def.wmo.int/opm/2013
* Changed version for Package "«ApplicationSchema» OPM" to 1.0RC2
* Renamed Package "«Leaf» ObservableProperty" to "«Leaf» Observable Property"
* Changed xsdDocument tagged value for (re-named) Package "«Leaf» Observable Property" to 
    "observable-property.xsd"; general style change for file-names to be all lower-case
- Removed stereotype «Type» from Class "ObservableProperty" from Package "«Leaf» Procedure"; 
    use of this stereotype is deprecated in favour of un-stereotyped Classes
- Removed stereotype «Type» from Class "AbstractObservableProperty" from Package "«Leaf» Procedure"; 
    use of this stereotype is deprecated in favour of un-stereotyped Classes
- Removed stereotype «Type» from Class "CompositeObservableProperty" from Package "«Leaf» Procedure"; 
    use of this stereotype is deprecated in favour of un-stereotyped Classes
- Removed stereotype «Type» from Class "QualifiedObservableProperty" from Package "«Leaf» Procedure"; 
    use of this stereotype is deprecated in favour of un-stereotyped Classes
* Updated URI for "vocabulary" tagged value for Class "«CodeList» StatisticalFunctionCode" defined 
    in Package "«Leaf» Observable Property": "http://codes.wmo.int/grib2/codeflag/4.10"
* Amended documentation for Class "«CodeList» StatisticalFunctionCode" to refer to (primarily) "WMO No. 
    306 Vol I.2 Part B FM 92 GRIB code-table 4.10 'Type of statistical processing'" and (supplemental) 
    "WMO No. 306 Vol I.2 Part B FM 94 BUFR code-table 0 08 023 'First-order statistics'"
* Updated "codeSpace" tagged value for Class "«CodeList» StatisticalFunctionCode" defined in Package 
    "«Leaf» Observable Property": "http://codes.wmo.int/grib2"
* Updated "dictionaryIdentifier" tagged value for Class "«CodeList» StatisticalFunctionCode" defined 
    in Package "«Leaf» Observable Property": "http://codes.wmo.int/grib2/codeflag/4.10"
* Updated "memberIdentifierStem" tagged value for Class "«CodeList» StatisticalFunctionCode" defined 
    in Package "«Leaf» Observable Property": "http://codes.wmo.int/grib2/codeflag/4.10"
* Updated Attribute "aggregationTimePeriod" (Class "«DataType» StatisticalQualifier" from Package 
    "«Leaf» Observable Property") to specify type TM_PeriodDuration (from ISO 19108)
* Amended name of Attribute "uom" from Classes "QualifiedObservableProperty", "«DataType» 
    ScalarConstraint" and "«DataType» RangeConstraint" to "unitOfMeasure"; this attribute is type 
    UnitOfMeasure (from ISO 19103 Basic-types) which itself includes the attribute "uom" - the resulting 
    serialisation would appear odd 
* Amended Attribute “unitOfMeasure” from Classes “«DataType» ScalarConstraint“ and “«DataType» 
    RangeConstraint“ to have cardinality [0..1]; amended following assessment of INSPIRE implementation of 
    the Observable Property Model
* Amended ordering of Attributes from Class "«DataType» ScalarConstraint" to ensure that "unitOfMeasure"
    precedes "value"; set taggedValue "sequenceNumber" accordingly
* Amended taggedValues for Attribute "count" from Class "CompositeObservableProperty" to allow 
    serialisation as XML attribute; xsdAsAttribute = "true"
+ Added new Class “«enumeration» ComparisonOperator” to provide a set of (simple) mathematical operators 
    (e.g. “ne”, “lt”, “le”, “eq”, “ge”, “gt”) – this shall be equivalent to the INSPIRE Class “«enumeration» 
    ComparisonOperatorValue” that has values “equalTo”, “notEqualTo”, “lessThan”, “greaterThan”, 
    “lessThanOrEqualTo” and “greaterThanOrEqualTo”; included following assessment of INSPIRE implementation 
    of the Observable Property Model
* Amended Attribute “value” from Class “«DataType» ScalarConstraint" to specify type "Number"
+ Added Attribute “comparisonOperator” (type “«enumeration» ComparisonOperator”) to Class “«DataType» 
    ScalarConstraint” with cardinality [1]; mark for serialisation as XML Attribute by specifying taggedValue 
    xsdAsAttribute = "true"; included following assessment of INSPIRE implementation of the Observable 
    Property Model
+ Added Attributes “startComparison” and “endComparison” (both type “«enumeration» ComparisonOperator”) to 
    Class “«DataType» RangeBounds” with cardinality [1]; mark both Attributes for serialisation as XML 
    attribute by specifying taggedValue xsdAsAttribute = "true"; added following assessment of INSPIRE 
    implementation of the Observable Property Model
* Amended as necessary values for taggedValue "sequenceNumber" to ensure correct ordering of properties in 
    resulting XSD serialisation; paying particular attention to Associations
* Various improvements in model documentation

Note: for 1.0 Release Candidate 2 the WMO codes registry is deployed at http://test.wmocodes.info
    rather than the eventual target location of http://codes.wmo.int

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1.0 Release Candidate 1 - December 2012
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Initial model release based on work from Open Geospatial Consortium (OGC) Sensor Web Enablement (SWE)
    standards working group and subsequent revision within INSPIRE Data Specification Thematic Working 
    Groups.