diff --git a/DESCRIPTION b/DESCRIPTION
index 1202cfa..8ed1f83 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: nomisr
 Type: Package
 Title: Access 'Nomis' UK Labour Market Data
-Version: 0.2.0.9000
+Version: 0.3.0
 Authors@R: c(
     person(
       "Evan", "Odell", email = "evanodell91@gmail.com", role = c("aut", "cre"),
diff --git a/NEWS.md b/NEWS.md
index e261cd7..cdc9fcf 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,14 +1,22 @@
-# nomisr 0.2.0.9000
+# nomisr 0.3.0
 
-* Using `rsdmx` to parse metadata, fixing problems with oddly formatted JSON.
+## New features and function changes
+
+* New `nomis_codelist()` function, which returns the internal coding for 
+different concepts used by the NOMIS API in a \code{tibble}, given a dataset 
+ID and a concept name. 
 
 * The `additional_queries` parameter in `nomis_get_data()` and 
-`nomis_get_metadata()` has been deprecated
-and will eventually be removed. Please use the `...` parameter for 
-queries including concepts not available through the default parameters.
+`nomis_get_metadata()` has been deprecated and will eventually be removed. 
+Please use the `...` parameter for queries including concepts not available 
+through the default parameters.
+
+* The `sex` parameter in `nomis_get_data()` will also work with datasets that 
+use "gender" instead of "sex".
 
-* 
+## Internal changes and bug fixes
 
+* Uses `rsdmx` to parse metadata, fixing #7.
 
 # nomisr 0.2.0
 
diff --git a/R/data_download.R b/R/data_download.R
index 394f502..9c825d7 100644
--- a/R/data_download.R
+++ b/R/data_download.R
@@ -110,7 +110,11 @@
 #' @param ... Use to pass any other parameters to the API. Useful for passing 
 #' concepts that are not available through the default parameters. Only accepts
 #' concepts identified in \code{\link{nomis_get_metadata}} and concept values 
-#' identified in \code{\link{nomis_codelist}}
+#' identified in \code{\link{nomis_codelist}}. Parameters can be quoted or
+#' unquoted, and are not case sensitive. Each parameter should have a name and
+#' a value. For example \code{cause_of_death = 10300} and 
+#' \code{CAUSE_OF_DEATH = 10300} will return the same result when querying 
+#' dataset "NM_161_1".
 #'
 #' @return A tibble containing the selected dataset.
 #' By default, all tibble columns are parsed as characters.
diff --git a/cran-comments.md b/cran-comments.md
index b60fff6..467a576 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,24 +1,15 @@
 
 ## Release summary
 
-This is a resubmission of the `nomisr` package, with new version number 0.2.0. 
-This version removes redundant description text and places 'Nomis' in 
-single quotes in the DESCRIPTION file, and includes details on external 
-package reviewers. It also includes a more flexible method for API key 
-handling. `nomisr` provides functions to download UK census  data and other 
-official  statistics from the 'nomis' API.
+This is an update of the `nomisr` package, version number 0.3.0. 
+This version has updated syntax allowing for greater flexibility in 
+data queries, a new `nomis_codelist()` function and various internal bug fixes.
 
 ## Test environments
-* local OS X install, R 3.4.4
-* ubuntu 14.04 (on travis-ci), R 3.4.4
+* local OS X install, R 3.5.0
+* ubuntu 14.04 (on travis-ci), (devel and release)
 * win-builder (devel and release)
 
 ## R CMD check results
 
-0 errors | 0 warnings | 2 notes
-
-* This is a new release.
-
-* Possibly mis-spelled words in DESCRIPTION:
-    DWP (9:67)
-    Nomis (3:15, 8:53, 9:5)
+0 errors | 0 warnings | 0 notes
diff --git a/man/nomis_get_data.Rd b/man/nomis_get_data.Rd
index b81c92c..e468d90 100644
--- a/man/nomis_get_data.Rd
+++ b/man/nomis_get_data.Rd
@@ -88,7 +88,11 @@ excluding all others. \code{select} is not case sensitive.}
 \item{...}{Use to pass any other parameters to the API. Useful for passing 
 concepts that are not available through the default parameters. Only accepts
 concepts identified in \code{\link{nomis_get_metadata}} and concept values 
-identified in \code{\link{nomis_codelist}}}
+identified in \code{\link{nomis_codelist}}. Parameters can be quoted or
+unquoted, and are not case sensitive. Each parameter should have a name and
+a value. For example \code{cause_of_death = 10300} and 
+\code{CAUSE_OF_DEATH = 10300} will return the same result when querying 
+dataset "NM_161_1".}
 }
 \value{
 A tibble containing the selected dataset.