Allow to parse SDF 1.5 (see: #264) and fix parsing <pose> tag
Add general soft box mesh shape
Add note on limitation of number of vertices of box mesh
- This should be fixed to allow [2 2 2]
Use dense soft box shape for softBodies app
Update changelog for DART 4.2
Update meta files for debian package
Set version to 4.2.0
Merge branch 'release-4.2'