Move toward being user-facing rather than plugin-facing

implementations/racket/preserves/preserves-schema/main.rkt

@@ -1,12 +1,13 @@
 #lang racket/base
 
-(provide (all-from-out "compiler.rkt"))
+(provide (all-from-out "methods.rkt"))
 
-(require "compiler.rkt")
+(require "methods.rkt")
 
-(module+ reader
+(module reader racket/base
   (provide (rename-out [read-preserves-schema-module read-syntax]))
   (require racket/match)
+  (require "compiler.rkt")
   (require (only-in "reader.rkt" port->schema))
   (require (only-in racket/port port->list))
   (require (only-in "bin/preserves-schema-rkt.rkt" load-plugins))