v0.5.4

v0.5.4 (2020-02-02)

Diff since v0.5.3

Merged pull requests:

• v0.5.4-rc1 (#233) (dehann)
• examples for tree and recycling (#232) (dehann)
• adjust cliq by cliq test (#231) (dehann)
• itegrating g2o support (#229) (dehann)
• fix typo in compat section (#228) (KristofferC)
• slight relax test (#227) (dehann)