Add macro trixi_include_changeprecision to make a double precision elixir run with single precision
#120
| Job | Run time |
|---|---|
| 53s | |
| 1m 2s | |
| 1m 15s | |
| 1m 0s | |
| 1m 1s | |
| 1m 15s | |
| 1m 11s | |
| 1m 13s | |
| 1m 10s | |
| 10m 0s |