Unicode 13 support (#179)

* exclude Sk from zero-width chars (closes #167)

* update for Unicode 13

README.md

@@ -60,7 +60,7 @@ The C library is found in this directory after successful compilation
 and is named `libutf8proc.a` (for the static library) and
 `libutf8proc.so` (for the dynamic library).
 
-The Unicode version supported is 12.1.0.
+The Unicode version supported is 13.0.0.
 
 For Unicode normalizations, the following options are used:
 

data/Makefile

@@ -22,10 +22,10 @@ CharWidths.txt: charwidths.jl EastAsianWidth.txt
 	$(JULIA) charwidths.jl > $@
 
 # Unicode data version (must also update utf8proc_unicode_version function)
-UNICODE_VERSION=12.1.0
+UNICODE_VERSION=13.0.0
 
 # Unicode emoji version (managed separately from UNICODE_VERSION)
-UNICODE_EMOJI_VERSION=12.0
+UNICODE_EMOJI_VERSION=13.0
 
 UnicodeData.txt:
 	$(CURL) $(CURLFLAGS) -o $@ -O http://www.unicode.org/Public/$(UNICODE_VERSION)/ucd/UnicodeData.txt

data/charwidths.jl

@@ -60,7 +60,7 @@ zerowidth = Set{Int}() # categories that may contain zero-width chars
 push!(zerowidth, UTF8PROC_CATEGORY_MN)
 push!(zerowidth, UTF8PROC_CATEGORY_MC)
 push!(zerowidth, UTF8PROC_CATEGORY_ME)
-push!(zerowidth, UTF8PROC_CATEGORY_SK)
+# push!(zerowidth, UTF8PROC_CATEGORY_SK)  # see issue #167
 push!(zerowidth, UTF8PROC_CATEGORY_ZL)
 push!(zerowidth, UTF8PROC_CATEGORY_ZP)
 push!(zerowidth, UTF8PROC_CATEGORY_CC)

utf8proc.c

@@ -101,7 +101,7 @@ UTF8PROC_DLLEXPORT const char *utf8proc_version(void) {
 }
 
 UTF8PROC_DLLEXPORT const char *utf8proc_unicode_version(void) {
-  return "12.1.0";
+  return "13.0.0";
 }
 
 UTF8PROC_DLLEXPORT const char *utf8proc_errmsg(utf8proc_ssize_t errcode) {