Release 0.2.0: percent-encode path params, add with_client, derive Clone

[azeemshaik025]

Summary

Non-breaking 0.2.0 — one correctness fix and two additive ergonomics wins. No existing API changes; new keeps the same signature.

Fixed

• Path parameters are now percent-encoded (RFC 3986 unreserved set). A value like 1/2 or a?b previously went into the URL verbatim and could break out of its path segment; it's now encoded (1%2F2, a%3Fb). Encoding is done with a tiny dependency-free helper — nothing new lands in downstream Cargo.tomls.

Added

• with_client(url, [auth], client, timeout) — supply your own reqwest::Client so one connection pool, TLS config, proxy, and set of default headers can be shared across clients. new now delegates to it.
• #[derive(Clone)] on the generated struct — cheap (reqwest::Client is Arc-backed), so it clones into spawned tasks.

Docs

• README: Constructors section for new/with_client, Clone noted in the generated-code list.
• advanced.rs demonstrates sharing one pool across two service clients; basic.rs points at the with_client alternative.
• CHANGELOG [0.2.0] entry.

Tests

All 23 tests pass (19 pre-existing unchanged + 4 new); cargo fmt --check and cargo clippy --all-targets -- -D warnings clean.

New test	Proves
test_path_params_are_percent_encoded	1/2 → single segment; a raw / would miss the mock
test_with_client_uses_caller_config	a default header on the injected client reaches the server — its pool/TLS config is the one in effect
test_cloned_client_still_works	a clone issues a real request; the original still works after
test_with_client_constructor	with_client builds a working client

The pre-existing test_get_with_path_params (id=123 → still one segment) confirms encoding didn't regress ordinary values.

Deferred to a later breaking release

Error-body capture, Duration-typed timeout, #[non_exhaustive] error enum, and typed error bodies (the standout feature) — all need a breaking 0.3.0 and/or DSL design, so they're intentionally out of scope here.