v00-11

2020-07-21 tmadlener (PR#101)
- Fix bug where ConstObject with empty OneToManyRelations give an invalid iterator range, #100
2020-06-23 Andre Sailer (PR#99)
- Point to libpodioDict.so instead of libpodio.so in rootmap file
2020-06-03 Frank Gaede (PR#92)
- implement reading/writing of meta data for runs, events and collections
  - based on GenericParameters that hold named parameters of type int, float, string or vectors if these (copied from lcio::LCParameters)
  - meta data for the three types is always written
  - it is read only on request
- example for writing:
```
   auto& evtMD = store.getEventMetaData() ;
    evtMD.setValue( "UserEventWeight" , (float) 100.*i ) ;
```
- example for reading:
```
  auto& evtMD = store.getEventMetaData() ;
  float evtWeight = evtMD.getFloatVal( "UserEventWeight" ) ;
```
- addresses #49
2020-05-26 Andre Sailer (PR#91)
- Ensure podioRootIO is linked against podioDict even when linker uses as-needed by default, fixes #90
2020-05-26 Thomas Madlener (PR#89)
- Updated README and env.sh to reflect changes in install process
2020-05-12 Valentin Volkl (PR#88)
- change add relation naming addXxxx -> addToXxxxs
2020-05-12 Valentin Volkl (PR#87)
- update minimum required CMake version to 3.8
- remove obsolete Jenkinsfile
- make CPack config optional: cmake variable ENABLE_CPACK defaults to OFF
- update Readme with Spack instructions
2020-04-14 Frank Gaede (PR#83)
- allow automatic change of version in CMakeLists.txt
  - fixes #82

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