Tracking history of changes across different files

[odisseus]

Use case

This pull request splits a large source file in two without making any actual changes to the code.

Unfortunately, ContextBuddy doesn't show the complete history of the code that went into the new file. It shows only the commits that happened after the split.

[romanowski]

This will come on next big release (0.3x)

[odisseus]

Here's another example of a similar commit: https://github.com/JetBrains/intellij-scala/commit/2c9c7007f522a4de77f376a24c565ae0bcb532aa

However, this commit is more complicated, as it involves merging two files into one with a different name, and some refactoring.