Genfut 0.5.0

• Various suggestions for changes and improvements. (#35)
  • Renames SequentialC to C, and MulticoreC to Multicore.
  • Panics and stops the process if the futhark compilation fails, instead of potentially failing silently.
  • Adds optimization flags for the different backends in build.rs.
• Move src/bin/main.rs -> src/main.rs to make cargo install work (#36)
• Backend selection with a enum instead of features (#31)

New Contributors

• @pema99 made their first contribution in https://github.com/Erk-/genfut/pull/28
• @Ulrik-dk made their first contribution in https://github.com/Erk-/genfut/pull/35
• @Munksgaard made their first contribution in https://github.com/Erk-/genfut/pull/36