Require Racket 6.2

- Drop support for Rackets < 6.2 because they are no longer testable
  -- see <racket/racket-lang-org#88>.

- Add newer Racket version 7.2.

- Bump our version to 0.30.

.travis.yml

@@ -21,8 +21,6 @@ env:
     # Supply more than one RACKET_VERSION (as in the example below) to
     # create a Travis-CI build matrix to test against multiple Racket
     # versions.
-    - RACKET_VERSION=6.1
-    - RACKET_VERSION=6.1.1
     - RACKET_VERSION=6.2
     - RACKET_VERSION=6.3
     - RACKET_VERSION=6.4
@@ -36,6 +34,7 @@ env:
     - RACKET_VERSION=6.12
     - RACKET_VERSION=7.0
     - RACKET_VERSION=7.1
+    - RACKET_VERSION=7.2
     - RACKET_VERSION=HEAD
     - RACKET_VERSION=HEADCS
 

info.rkt

@@ -1,7 +1,7 @@
 #lang info
-(define version "0.29")
+(define version "0.30")
 (define collection 'multi)
-(define deps '(["base" #:version "6.1"]
+(define deps '(["base" #:version "6.2"]
                "find-parent-dir"
                "html-lib"
                ["markdown" #:version "0.25"]