[symengine] Add version 0.13.0.

[cqc-alec]

• Read the contributing guidelines
• Checked that this PR is not a duplicate: list of PRs by recipe
• Tested locally with at least one configuration using a recent version of Conan

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All green in build 1 (015d48b6223567cd9dfe2af4586ee1f0d7891ff5):

• symengine/0.13.0:
  All packages built successfully! (All logs)

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All green in build 1 (015d48b6223567cd9dfe2af4586ee1f0d7891ff5):

• symengine/0.13.0:
  Built 8 packages out of 10 (All logs)

[uilianries]

Thank you for your PR!

This new minor includes fast float vendorized, not big deal, but we just need to check the licenses first: "https://github.com/symengine/symengine

[cqc-alec]

Thank you for your PR!

This new minor includes fast float vendorized, not big deal, but we just need to check the licenses first: "https://github.com/symengine/symengine

Ah, this one? https://github.com/symengine/symengine/blob/0ccc20fea491ba0939768a2d74e590df2c1c2a74/LICENSE#L256

[cqc-alec]

Hi @uilianries , is there something I can do to help with this?

[AbrilRBS]

Hi @cqc-alec, Uilian is currently on vacaction, so I'm taking over his PRs for now

I've pushed some improvements to the recipe to modernize it. I've used the new WITH_SYSTEM_FASTFLOAT to ensure that it's not using the vendorized version, and made sure that gmp/boost also works correctly now (-o="&:integer_class=boost" used to fail compilation before this PR)

Thanks