Merge #328

328: Bump secp256k1-zkp from `0dba4c0` to `ab7f6d8` r=thomaseizinger a=dependabot[bot]

Bumps [secp256k1-zkp](https://github.com/ElementsProject/rust-secp256k1-zkp) from `0dba4c0` to `ab7f6d8`.
<details>
<summary>Commits</summary>
<ul>
<li><a href="ab7f6d8f5e"><code>ab7f6d8</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ElementsProject/rust-secp256k1-zkp/issues/36">#36</a> from stevenroose/whitelist</li>
<li><a href="9144faa929"><code>9144faa</code></a> Add whitelist support</li>
<li>See full diff in <a href="0dba4c033a...ab7f6d8f5e74fd7bf5348d4fc3593bcc1dd532ad">compare view</a></li>
</ul>
</details>
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Cargo.lock

@@ -2314,7 +2314,7 @@ dependencies = [
 [[package]]
 name = "secp256k1-zkp"
 version = "0.4.0"
-source = "git+https://github.com/ElementsProject/rust-secp256k1-zkp#0dba4c033a929164dd21c488d2a5a9790919f65c"
+source = "git+https://github.com/ElementsProject/rust-secp256k1-zkp#ab7f6d8f5e74fd7bf5348d4fc3593bcc1dd532ad"
 dependencies = [
  "rand 0.6.5",
  "secp256k1",
@@ -2325,7 +2325,7 @@ dependencies = [
 [[package]]
 name = "secp256k1-zkp-sys"
 version = "0.4.0"
-source = "git+https://github.com/ElementsProject/rust-secp256k1-zkp#0dba4c033a929164dd21c488d2a5a9790919f65c"
+source = "git+https://github.com/ElementsProject/rust-secp256k1-zkp#ab7f6d8f5e74fd7bf5348d4fc3593bcc1dd532ad"
 dependencies = [
  "cc",
  "secp256k1-sys",