Fix user_context to merge with existing context

[meganemura]

No description provided.

[meganemura]

Test is failing due to #890

[st0012]

thanks for the PR, but I don't see a clear reason for this change. can you give me an example or related issue report?

[st0012]

I'm closing this now, but feel free to reopen it if you still think it's needed.

[agrobbin]

@st0012 I believe this is still a bug, or at least an inconsistency with the documentation on user_context. It states:

# Bind user context. Merges with existing context (if any).

However, the actual implementation appears to overwrite anything that's already set within user_context. For example:

Raven.user_context(id: current_user.id))
Raven.user_context(email: current_user.email) if current_user.email

This will result in the user_context losing the :id info if current_user.email is truthy.

[st0012]

@agrobbin thanks for raising this again with examples 👍 I've added #1064 to address that.

[agrobbin]

No problem @st0012, and thanks for the quick fix!!