Plan for CLI11 1.8

[henryiii]

Here's my plan for 1.8, and a rough idea for the future.

The last major feature for 1.8 (#242) was merged. In the next week or so, I'd like to do a little polishing (feel free to pitch in and test/suggest/help). I'm hoping to look at #250 and #253 in that time. Possibly also add a move constructor to simplify a common use case #268 (if it does not appear to be safe, I'll be happy to wait till 1.9 to decide, though). I'll probably try to make an official beta release (pretty much consider it in beta now if you'd like to test it!), and a full release at some point not long after.

For 1.9, I'd like to work on a method to allow part of the library to be precompiled to address #194. I'll also be removing and adding some warnings for the deprecated bits of the library, preparing for a slightly bigger removal in 2.0. I'm also highly considering dropping support for GCC 4.7 in one of those versions; please speak up if you need it!

Other general tasks include moving more of the CI over to Azure (I plan to release a post on the process on iscinumpy.gitlab.io, too), moving the tutorial so it shares the same repository (I love gitlab.io, but it will be easier to keep in sync with the code and additions - and maybe CLI11 will be synced there too!)

[phlptp]

@henryiii for the ExtraArguments error when using the move version of parse, can you check to make sure the excess arguments get printed in proper order for the different parse calls with extra arguments. I looked at it but it might be printing backwards in some cases, and I think someone else needs to take a look at it.

[phlptp]

I have a few tweaks related to issue #260, particular the footer callback, but I am still tinkering with it yet, so I won't submit any related PR's until after 1.8 is released.

[henryiii]

Besides checking the move version of parse, is there anything left for 1.8?

[phlptp]

There is the PR #253 that is open with an issue with gcc 4.7 So I guess that could be fixed or wait until after 1.8 and gcc 4.7 is dropped.