Bump version after CRAN acceptance

Author: jimhester

DESCRIPTION

@@ -1,7 +1,7 @@
 Encoding: UTF-8
 Package: memoise
 Title: Memoisation of Functions
-Version: 1.0.0
+Version: 1.0.0.9000
 Authors@R: c(
     person("Hadley", "Wickham", , "[email protected]", role = "aut"),
     person("Jim", "Hester", , "[email protected]", role = c("aut", "cre")),