cgi 0.4.0

== 0.4 (2020-04-11)

 * Add `text_response` for plain text response (v. similar to `string_response`)
 * Add `cgi_main!` and `cgi_try_main!` macros to reduce boilerplate

== 0.3.1 (2019-10-05)

 * Correctly publish

== 0.3.0 (2019-10-05) ''yanked''

 * Basic support for HTTP/2

== 0.2.0 (2018-02-18

 * Improved tests