Change the fish_[del|new] functions to fish_state_[del|new]
Make the fluids_descr_setfluid function a little prettier
Write the allocate function for a fish_block
Write a fish_block_deallocate function
Move smr1d.c to block.c
Add a skeletal file to start experimental smr1d solver
Add a fish_block_mapbuffer function
Give fish_block a physical extent: x0, x1
Add the fish_block_gridspacing function
Replace smr1d.c file