Merge pull request clawpack#85 from weslowrie/master

Adding General Geometry 3D Euler Equations Using F-Wave

Merge pull request clawpack#84 from mandli/fix-common-name-burgers

Fix mislabeled common blocks for parameters

Merge pull request clawpack#84 from mandli/fix-common-name-burgers

Fix mislabeled common blocks for parameters

Merge pull request clawpack#70 from weslowrie/patch-1

Update rpn3_euler.f90

5.1.0 release