Atgeirr Flø Rasmussen 82216fa24f Add (defaulted) gravity argument in some places. ... This is done to facilitate testing, using gravity = 10 m/s^2 for example.		2014-02-19 13:38:21 +01:00
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core	Add (defaulted) gravity argument in some places.	2014-02-19 13:38:21 +01:00