Update for SMAPI 2.0

[Pathoschild]

This pull request...

• Fixes compatibility with SMAPI 2.0 (without breaking compatibility with earlier versions).
• Updates the mod build package to the latest version.
  This adds support for deploying into the mod folder automatically, which I enabled for BuyRecipes. I left SendItems's deploy task as-is due to its config handling.
• Replaces custom update checks with SMAPI's new update-check feature.
• Bumps the versions for release.

I branched from master so the updates can be deployed independently of your refactor in develop. If the changes look fine, can you release BuyRecipes 1.0.1.zip and SendItems 1.0.3.zip? (Once this pull request is accepted, I can merge the changes into your develop branch if you want.)

[Denifia]

Out of interest... was this update requested by someone in the community, or you're just updating a bunch anyway?

[Denifia]

Yep, all looks good - thanks for doing this :)

[Pathoschild]

I'm updating a lot of mods as part of the SMAPI 2.0 migration. Some players may have requested the update, but unfortunately I don't keep track beyond making sure the requested mods are on that list.

[Pathoschild]

Thanks for the code review! You sent me an invite to the repo; did you want me to merge this pull request?

[Denifia]

I'm not in a position where I can push out a new build for at least a week. Yup, I've given you access so if you'd like to merge and create a new build - feel free :)

Also, this way if in the future you want to make changes so support SMAPI, you can just jump in a do it :P

[Pathoschild]

Will do!

If you add me as a team member on the Nexus mod pages, I can release the updates too. Here's how if you're interested:

1. Open the mod pages (see Buy Cooking Recipes and Send Items).
2. Click edit attributes in the sidebar.
3. Add Pathoschild under Other team members and click the (+) button next to the field.
4. Click submit at the bottom.

[Denifia]

Coolies... I've added you to both projects on Nexus mods. Feel free to update the mods, release new versions, etc.