Fix a memory error, forgot to free the block
Add a fluids_state_copy function
Change the way boundary conditions are applied, add neighbor blocks
Add a time_derivative field to fish_block
Change time update scheme to be managed by Lua, get first order working
Clear out monolithic fish_block_update function
Add temp_conserved field to fish_block
Demonstate working updates with midpoint/rk3 on a single block
Make increment toward advancing many blocks
Add the fish_block_positionatindex function
Fix a minor typo in problem definitions
Allow plotting from multiple blocks, in principle
Get solution working over arbitrarily many blocks in 1d
Do a minor refactor of block and srm1d code