gitGraph commit labels overlap, not legible

[paularmstrong]

Describe the bug
When providing gitGraph commit IDs and wanting something more human-readable, eg the commit title, the text will overlap:

To Reproduce
Steps to reproduce the behavior:

1. See screenshots and code samples
   Expected behavior
   Labels should avoid each other, either be separated vertically, or rotated 45deg

Screenshots

Code Sample

gitGraph
  commit id: "feat(api): ..."
  commit id: "fix(client): ..."
  commit id: "feat(modules): ..."
  commit id: "test(client): ..."
  commit id: "fix(api): ..."
  commit id: "ci: ..."

gitGraph
  commit id: "feat(api): ..."
  commit id: "fix(client): ..."
  commit id: "feat(modules): ..."
  commit id: "test(client): ..."
  commit id: "fix(api): ..."
  commit id: "ci: ..."

Or for the use case that you want to use longer/full SHAs:

gitGraph
  commit id: "75f7219e83b321cd3fdde7dcf83bc7c1000a6828"
  commit id: "0db4784daf82736dec4569e0dc92980d328c1f2e"
  commit id: "7067e9973f9eaa6cd4a4b723c506d1eab598e83e"
  commit id: "66972321ad6c199013b5b31f03b3a86fa3f9817d"

gitGraph
  commit id: "75f7219e83b321cd3fdde7dcf83bc7c1000a6828"
  commit id: "0db4784daf82736dec4569e0dc92980d328c1f2e"
  commit id: "7067e9973f9eaa6cd4a4b723c506d1eab598e83e"
  commit id: "66972321ad6c199013b5b31f03b3a86fa3f9817d"

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.