use github flavoured markdown as default

Application/GBApplicationSettingsProvider.m

@@ -233,7 +233,7 @@ - (NSString *)stringByConvertingMarkdownToHTML:(NSString *)markdown {
 	const char* input=[markdown cStringUsingEncoding:NSUTF8StringEncoding];
 
 	if(input) {
-		MMIOT *document = mkd_string((char *)input, (int)strlen(input), 0);
+		MMIOT *document = gfm_string((char *)input, (int)strlen(input), 0);
 		mkd_compile(document, 0);
 
 		char *html = NULL;

Libraries/Discount/mkdio.h

@@ -12,6 +12,11 @@ typedef unsigned int mkd_flag_t;
 MMIOT *mkd_in(FILE*,mkd_flag_t);		/* assemble input from a file */
 MMIOT *mkd_string(const char*,int,mkd_flag_t);	/* assemble input from a buffer */
 
+/* line builder for github flavoured markdown
+ */
+MMIOT *gfm_in(FILE*,mkd_flag_t);		/* assemble input from a file */
+MMIOT *gfm_string(const char*,int,mkd_flag_t);	/* assemble input from a buffer */
+
 void mkd_basename(MMIOT*,char*);
 
 void mkd_initialize();
@@ -82,8 +87,9 @@ void mkd_ref_prefix(MMIOT*, char*);
 #define MKD_NOHTML	0x00000008	/* don't allow raw html through AT ALL */
 #define MKD_STRICT	0x00000010	/* disable SUPERSCRIPT, RELAXED_EMPHASIS */
 #define MKD_TAGTEXT	0x00000020	/* process text inside an html tag; no
-					 * <em>, no <bold>, no html or [] expansion */
+* <em>, no <bold>, no html or [] expansion */
 #define MKD_NO_EXT	0x00000040	/* don't allow pseudo-protocols */
+#define MKD_NOEXT	MKD_NO_EXT	/* ^^^ (aliased for user convenience) */
 #define MKD_CDATA	0x00000080	/* generate code for xml ![CDATA[...]] */
 #define MKD_NOSUPERSCRIPT 0x00000100	/* no A^B */
 #define MKD_NORELAXED	0x00000200	/* emphasis happens /everywhere/ */
@@ -99,6 +105,7 @@ void mkd_ref_prefix(MMIOT*, char*);
 #define MKD_NOALPHALIST	0x00080000	/* forbid alphabetic lists */
 #define MKD_NODLIST	0x00100000	/* forbid definition lists */
 #define MKD_EXTRA_FOOTNOTE 0x00200000	/* enable markdown extra-style footnotes */
+#define MKD_NOSTYLE	0x00400000	/* don't extract <style> blocks */
 #define MKD_EMBED	MKD_NOLINKS|MKD_NOIMAGE|MKD_TAGTEXT
 
 /* special flags for mkd_in() and mkd_string()