Fix SPM Usage in Xcode 12.5+

[rogerluan]

Description

On Xcode 12.5, apparently the umbrella header generation logic changed, so this stopped working on my project because my project couldn't find MXScrollView anymore, when importing this lib using SPM. The problem was that the generated umbrella header didn't contain references to all the public headers. This PR aims to fix that.

Motivation and Context

How Has This Been Tested?

It compiles on my project now 😄

Before:

import MXParallaxHeader
…
let scrollView = MXScrollView // Couldn't find reference to MXScrollView

Now, the same code above compiles just fine.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation. - Nope
• I have updated the documentation accordingly. - There's no need to update anything

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[rogerluan]

This is a PR, it's not stale 😢

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[rogerluan]

Still valid

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[rogerluan]

Still valid.

[rogerluan]

@maxep could this PR be reviewed any time? 🙇

[maxep]

Hi @rogerluan

Thank you for your contribution! Tho, I'm no longer maintaining this project, cf. #124
Which mean that I won't be publishing new versions. I would be happy to add you as a collaborator to this project if you want to manage the merging and the release, so anyone can benefit from your contribution.

Otherwise, we can keep this PR open for reference.

Let me know :)

[rogerluan]

@maxep hi!👋 feel free to add me as a contributor! Happy to move things forward :)
Just make sure I have enough permissions to publish releases (and maybe pods?), so I don't have to bother you again 😄 cheers!

[maxep]

@rogerluan, super nice, thank you!

So I've added you as a collaborator on this project. I've tried to add your email (from your GH profile) to cocoapods, but it seems that you are not yet registered. Could you please register? 👉 https://guides.cocoapods.org/making/getting-setup-with-trunk.html#getting-started

Thanks again!

[rogerluan]

I'll do that tomorrow! 🤗

[rogerluan]

Done @maxep ! :) Same email as my GH profile

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.