Update versions and deps

- Drop support for Racket before 6.2 as it is no longer testable.
  See <racket/racket-lang-org#88>

- Depend on threading-lib not rackjure. All we were using from
  rackjure was `~>` and `str`. We can get former directly from
  threading-lib, and latter is just `~a`.

- Add newer Racket versions 7.1 and 7.2.

- Bump our version to 0.26.

.travis.yml

@@ -21,10 +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=6.0
-    - RACKET_VERSION=6.0.1
-    - RACKET_VERSION=6.1
-    - RACKET_VERSION=6.1.1
     - RACKET_VERSION=6.2
     - RACKET_VERSION=6.3
     - RACKET_VERSION=6.4
@@ -37,6 +33,8 @@ env:
     - RACKET_VERSION=6.11
     - RACKET_VERSION=6.12
     - RACKET_VERSION=7.0
+    - RACKET_VERSION=7.1
+    - RACKET_VERSION=7.2
     - RACKET_VERSION=HEAD
 
 # You may want to test against certain versions of Racket, without

info.rkt

@@ -1,13 +1,13 @@
 #lang setup/infotab
-(define version "0.25")
+(define version "0.26")
 (define collection 'multi)
 (define deps '("base"
                ["parsack" "0.4"]
-               ["racket" "6.0"]
-               ["rackjure" "0.9"]
+               ["racket" "6.2"]
                "sandbox-lib"
                "scribble-lib"
-               "srfi-lite-lib"))
+               "srfi-lite-lib"
+               ["threading-lib" "1.1"]))
 (define build-deps '("at-exp-lib"
                      "html-lib"
                      "racket-doc"

markdown/parse.rkt

@@ -10,7 +10,7 @@
          racket/port
          racket/promise
          racket/string
-         rackjure/threading
+         threading
          xml/xexpr
          "entity.rkt"
          "html.rkt"

markdown/scrib.rkt

@@ -3,7 +3,7 @@
 (require (for-syntax racket/base)
          racket/contract
          racket/match
-         rackjure/threading
+         threading
          scribble/base
          (prefix-in core: scribble/core)
          scribble/html-properties

markdown/suite-test.rkt

@@ -8,7 +8,7 @@
            racket/pretty
            racket/runtime-path
            rackunit
-           rackjure/threading
+           threading
            (only-in sexp-diff sexp-diff)
            xml
            "ci-environment.rkt"

markdown/test.rkt

@@ -8,7 +8,7 @@
            racket/runtime-path
            racket/string
            racket/system
-           rackjure/threading
+           threading
            rackunit
            sexp-diff
            "display-xexpr.rkt"

markdown/toc.rkt

@@ -4,8 +4,7 @@
          racket/list
          racket/match
          racket/function
-         rackjure/threading
-         rackjure/str
+         threading
          (only-in srfi/1 span)
          "parse.rkt")
 
@@ -38,7 +37,7 @@
          ([id ,anchor])
          . ,body)
        (define level (~> tag symbol->string (substring 1) string->number))
-       (head level (str "#" anchor) body)]
+       (head level (~a "#" anchor) body)]
       [_ #f]))
 
   `(div ([class "toc"])

markdown/xexpr2text.rkt

@@ -5,7 +5,7 @@
          racket/list
          racket/match
          racket/string
-         rackjure/threading
+         threading
          (only-in xml valid-char?)
          "xexpr.rkt")