Case sensitivity issues with generated changelog file

[lannonbr]

When I ran through setting up covector, when it creates a CHANGELOG.md file it does not account for case sensitivity, and in a repo that already had changelog.md and in Linux and case-sensitive Filesystems, this was fine, but as soon as I cloned down the changes to MacOS which is case-insensitive, Git started throwing warnings like the following and caused issues due to the collision:

warning: the following paths have collided (e.g. case-sensitive paths
on a case-insensitive filesystem) and only one from the same
colliding group is in the working tree:

  'CHANGELOG.md'
  'changelog.md'