0.11.2 build error w/o pem feature.

[cpu]

Building 0.11.2 without the optional, but default, pem feature causes an import error from crl.rs and key_pair.rs unconditionally importing the ENCODE_CONFIG that is gated by that feature:

   Compiling rcgen v0.11.2
error[E0432]: unresolved import `crate::ENCODE_CONFIG`
 --> /home/daniel/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rcgen-0.11.2/src/crl.rs:8:5
  |
8 | use crate::ENCODE_CONFIG;
  |     ^^^^^^^^^^^^^^^^^^^^ no `ENCODE_CONFIG` in the root

error[E0432]: unresolved import `crate::ENCODE_CONFIG`
  --> /home/daniel/.cargo/registry/src/index.crates.io-6f17d22bba15001f/rcgen-0.11.2/src/key_pair.rs:12:45
   |
12 | use crate::{RcgenError, SignatureAlgorithm, ENCODE_CONFIG};
   |                                             ^^^^^^^^^^^^^ no `ENCODE_CONFIG` in the root

rcgen/src/lib.rs

Lines 112 to 119 in 0c8cfc7

	#[cfg(feature = "pem")]
	const ENCODE_CONFIG: pem::EncodeConfig = {
	let line_ending = match cfg!(target_family = "windows") {
	true => pem::LineEnding::CRLF,
	false => pem::LineEnding::LF,
	};
	pem::EncodeConfig::new().set_line_ending(line_ending)
	};

We should:

• Fix this
• Add CI coverage for this situation
• Make a point release (Publish a 0.11.3 release #163)