Bump version to v0.3.16

[leburgel]

Bump patch version to release fixed for TensorKit.BraidingTensor.

Release notes:

Patch with fixes for TensorKit.BraidingTensor, avoiding abstract type parameters and adding constructors for SumSpace instances. Additionally a number of inconsistencies, bugs and performance issues for various types of slice indexing operations have been solved.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
see 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[lkdvos]

Would be nice to get CI fixed, but happy to merge and release already if this is very blocking

[leburgel]

Right, forgot about the JLArrays thing. It's just blocking QuantumKitHub/MPSKit.jl#514, which isn't very urgent by itself. So same to me, also fine with waiting for the CI fix.

[leburgel]

When do you think you would have some time to look at the CI failures @lkdvos? No hurry, but if it's not for right away I would go ahead and tag this so we can push through the MPSKit fix.

[lkdvos]

Have them locally fixed, will try and push this today or tomorrow:)

[lkdvos]

Update: fixed now, will include the indexing performance changes as they include a number of bug fixes as well, and then merge and release this tomorrow