release v4.1.0

 * Added request options:
  * http\Client\Curl::$abstract_unix_socket
  * http\Client\Curl::$altsvc
  * http\Client\Curl::$altsvc_ctrl
  * http\Client\Curl::$aws_sigv4
  * http\Client\Curl::$doh_url
  * http\Client\Curl::$dns_shuffle_addresses
  * http\Client\Curl::$haproxy_protocol
  * http\Client\Curl::$hsts
  * http\Client\Curl::$hsts_ctrl
  * http\Client\Curl::$http09_allowed
  * http\Client\Curl::$maxage_conn
  * http\Client\Curl::$pinned_publickey
  * http\Client\Curl::$proxy_ssl
  * http\Client\Curl::$socks5_auth
  * http\Client\Curl::$tcp_fastopen
  * http\Client\Curl::$tls13_ciphers
  * http\Client\Curl::$xoauth2_bearer
 * Added request option constants:
  * http\Client\Curl\AUTH_AWS_SIGV4
  * http\Client\Curl\AUTH_BEARER
  * http\Client\Curl\AUTH_NONE
  * http\Client\Curl\HTTP_VERSION_2_PRIOR_KNOWLEDGE
  * http\Client\Curl\HTTP_VERSION_3
  * http\Client\Curl\SSL_VERSION_MAX_*
  * http\Client\Curl\SSL_VERSION_TLSv1_3
 * Added library version constants:
  * http\Client\Curl\Versions\BROTLI
  * http\Client\Curl\Versions\CAINFO
  * http\Client\Curl\Versions\CAPATH
  * http\Client\Curl\Versions\HYPER
  * http\Client\Curl\Versions\ICONV
  * http\Client\Curl\Versions\NGHTTP2
  * http\Client\Curl\Versions\QUIC
  * http\Client\Curl\Versions\ZSTD