v0.5.14

Trixi v0.5.14

Diff since v0.5.13

Merged pull requests:

• Division by zero in zero function case (#1371) (@Arpit-Babbar)
• switch to SimpleUnPack.jl (#1376) (@ranocha)
• Correct LaTex Syntax for Linearized Euler Eqs (#1377) (@DanielDoehring)