Progress towards 3.0 release for other packages

[bchretien]

This issue aims at tracking progress for our next release:

• roboptim-core
  • Prepare new API
  • Enable 3.0 branch
• roboptim-core-plugin-ipopt
  • Conversion to the new API (cf. roboptim/roboptim-core-plugin-ipopt#26)
  • Optimize thanks to Eigen::Ref (cf. roboptim/roboptim-core-plugin-ipopt#26)
  • Enable 3.0 branch
• roboptim-core-plugin-cminpack
  • Conversion to the new API (cf. roboptim/roboptim-core-plugin-cminpack@2751720)
  • Enable 3.0 branch
• roboptim-core-plugin-eigen
  • Conversion to the new API (cf. roboptim/roboptim-core-plugin-eigen@f6f2b76)
  • Enable 3.0 branch
• roboptim-core-plugin-nag
  • Conversion to the new API (cf. roboptim/roboptim-core-plugin-nag@3519752)
  • Enable 3.0 branch (expected to fail because solver requires a license)
• roboptim-core-plugin-nlopt
  • Conversion to the new API (cf. roboptim/roboptim-core-plugin-nlopt@083a048)
  • Enable 3.0 branch
• roboptim-core-plugin-pagmo
  • Conversion to the new API (cf. roboptim/roboptim-core-plugin-pagmo@2aebf0f)
  • Enable 3.0 branch (expected to fail because of solver's random method)
• roboptim-core-python
  • Conversion to the new API (cf. roboptim/roboptim-core-python@801f248)
  • Enable 3.0 branch
• roboptim-trajectory
  • Conversion to the new API (cf. roboptim/roboptim-trajectory#24)
  • Enable 3.0 branch
• roboptim-shared-tests
  • Conversion to the new API (cf. roboptim/roboptim-shared-tests#14)
• roboptim-retargeting
  • ---> requires private files
• roboptim-tutorial
  • Conversion to the new API (cf. roboptim/roboptim-tutorial@1fd261b)
• roboptim-capsule
  • Conversion to the new API (cf. roboptim/roboptim-capsule@60a6350)
  • Enable 3.0 branch
• Benchmark large dense problems for Eigen::Ref
• Rename filter subdirectory (cf. #85)

[bchretien]

We will still need to do some benchmarking for Eigen::Ref, but this can be done after the release.