Update CocoaPods for 1.0.3 (#345)

Going to tag a 1.0.3 release as requested here:
#344 (comment)

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Signed-off-by: Michael Rebello <me@michaelrebello.com>

Update podspecs for 1.0.0 release (#319)

We're ready to release a 1.0!

Signed-off-by: Michael Rebello <me@michaelrebello.com>

Update podspecs for rc3 (#317)

Signed-off-by: Michael Rebello <me@michaelrebello.com>

Update conformance to v1.0.4 (#302)

Updates to
https://github.com/connectrpc/conformance/releases/tag/v1.0.4.

This validates the fix in
#298 for
#292 as well.

Signed-off-by: Michael Rebello <me@michaelrebello.com>

Update podspecs for v1.0.0-rc1 (#287)

Signed-off-by: Michael Rebello <me@michaelrebello.com>

Resolve all outstanding conformance opt-outs (#271)

This PR includes updates to fix all outstanding conformance test
failures and removes the corresponding opt-outs. All changes are
validated by the conformance test suite.

Many of these fixes are similar to
connectrpc/connect-kotlin#248 and
connectrpc/connect-kotlin#274.

Resolves #268.
Resolves #269.
Resolves #270.

This should also be one of the final changes before v1.0
#222.

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Signed-off-by: Michael Rebello <me@michaelrebello.com>