Release version 1.0.10

[landfillbaby]

This is mostly needed due to #838, without which static linking is broken.
As Brotli is now part of JPEG XL, this is crucial for programs wanting to support the new file format.
The current workaround there is to use a vendored copy of brotli's master branch, which isn't really a good idea for a major standard like that.
Also note: #848 (comment)

[AppVeyorBot]

✅ Build brotli 1.0.0#1641 completed (commit 6d171211a9 by @landfillbaby)

[landfillbaby]

note: the travis failures are due to gcc-4.9 disappearing rather than any brotli problem

[AppVeyorBot]

✅ Build brotli 1.0.0#1650 completed (commit 4516db4ad3 by @landfillbaby)

[andrerom]

@landfillbaby If you rebase CI might now get green as it's switched to Google Actions.

@eustas Any update on a 1.10 release?
Or a 1.0.9.1 release without new features like shared dictionary or other changes holding out a bug fix release?

[eustas]

Hopefully will release 1.0.10 (or is is 1.1?) right after NY.

[andrerom]

1.0.10 (or is is 1.1?)

With new features in branch, v1.1 might be best to signal the changes 👍