#28 [v0.4.0] testing of build 0.4.0.v20180121-1618

new fixed issues in this build:
- [x] #17 [dev] include the code from org.yakindu.base.xtext.utils.jface
- fixed error in constraints, because '-' is not valid character within
ID

#27 [v0.4.0] testing of build 0.4.0.v20180121-1352

new fixed issues in this build:
- [x] impoved validator messages
- [x] fixed some warnings
- [x] added EMF mapping to 4.6 target platform
- [x] improved validation of AttributeValue
  - [x] moved check methods to ValidationUtil
  - [x]  added boolean validation
- [x] update FM validation, so it checks wheter the default value is
appropriate for the given attribute type
- [x] Travis-CI: oraclejdk7 is not supported anymore (using openjdk8 and
oraclejdk8 now)
- [x] Updated default target platform to Oxygen (4.7) and added target
platform for Eclipse Photon (4.8)
- [x] Use Tycho 1.0.0 (removed openjdk7, because new Tycho (>=0.25)
needs Java 8)

#24 [v0.4.0] testing of build 0.4.0.v20170427-1144

new fixed issues in this build:
- [x] prepare not user changeable ID (UUID generated)
- [x] added menues for manually fix this for attributes and features
- [x] disabled "Generate ID from Name" menues

fixed issues with previous build(s):
- [x] #23 [v0.4.0] testing of build 0.4.0.v20170425-2048
  - [x] #1 add support of default attribute values
  - [x] #21 [v0.3.1] update project from JavaSE-1.6 to 1.7
  - [x] fixed model validation error "defaultValueLiteral= BOOLEAN"
  - [x] fixed path to BooleanConstraintLanguage.genmodel
  - [x] set dependency of org.yakindu.base.xtext.utils.jface to minimum
version=2.5.0
  - [x] fixed NPE on dispose() because problemManager is null
  - [x] added more information to tooltips
  - [x] fixed Feature and Attribute ID and updated model
  - [x] added migration (mapping) for old 0.3.0 models defined by
Siemens
  - [x] changed ID generation to UUID
  - [x] added model 0.4.0 and migration from 0.3.0
  - [x] updated YAFMT version to 0.4.0
- [x] #22 [v0.3.1] testing of build 0.3.1.v20170319-2117
  - [x] #20 [v0.3.1] update information about new home and update site
  - [x] #21 [v0.3.1] update project from JavaSE-1.6 to 1.7
- [x] #19 [v0.3.1] testing of build 0.3.1.v20170319-2031
  - [x] #9 dependency to de.itemis.xtext.utils.jface 2.1.0 cannot be
resolved
  - [x] #15 [dev] add target definition for all dependencies
  - [x] #18 [dev] add maven (tycho) build for CI

Version 0.3.1

Version 0.3.0.

Tag for version 0.2.0.

First version of editor 0.1.0.