Add changelog for PR #1516 concerning CaptureAll

changelog.d/CaptureAll

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+synopsis: Bugfix - CaptureAll produces [""] for empty paths due to trailing slash.
+prs: #1516
+issues: #1243
+
+description: {
+
+CaptureAll resulted in `[""]` for empty paths due to trailing slash.  Similar
+oddities occurred around these edge cases like `"/"` resulted in `[]` correctly,
+but `"//"` resulted in `["", ""]`.  This patch simply eliminates the first `""`
+in the pathinfo list as taken from the wai response.  This might break user
+code that relies on personal shims to solve the problem, however simply removing their
+workarounds should fix their code as the behavior is now sane.
+
+}