I'm not sure if it matters not if you can do anything about it, but the debug footer (adding the debug bar) is added to the file.

I could only make it work if the timestamp had an @ prefix. Otherwise I get a parse error. Is the @ impled, or should it be mentioned in the docs?

I've git cloned the adding in "addons", so I have a "iCal" directory in the "addons" directory.

Here's what happens next :

`➜ git git:(master) ✗ php please addons:refresh
[✗] This command is deprecated. Please use php please update:addons

Adding packages: erin-dalzell/ical, marbles/sitemap
Please wait while dependencies are updated via Composer. This may take a while.
The command "php composer.phar update erin-dalzell/ical marbles/sitemap --prefer-dist --no-dev --optimize-autoloader" failed.
Exit Code: 2(Misuse of shell builtins)

Output:

Error Output:

Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

Problem 1
- The requested package erin-dalzell/ical could not be found in any version, there may be a typo in the package name.

Potential causes:

• A typo in the package name
• The package is not available in a stable-enough version according to your minimum-stability setting
  see https://getcomposer.org/doc/04-schema.md#minimum-stability for more details.

Read https://getcomposer.org/doc/articles/troubleshooting.md for further common problems.
Running update with --no-dev does not mean require-dev is ignored, it just means the packages will not be installed. If dev requirements are blocking the update you have to resolve those problems.

Dependencies updated!
`

same if I do php please update:addons

Unfortunately, I don't understand addons well enough to understand what's going on.