Fixed 2 bugs related to quotes

Bug 1:
Parsing failed when quotes were used and a delimiter was not a comma
(due to using hardcoded comma in one condition...).

Bug 2:
Parsing failed when four quote characters were within quoted string (for
the purpose of including two quote characters within the parsed string itself).

Author: michalmonday

CSV_Parser.cpp

@@ -175,7 +175,7 @@ char * CSV_Parser::parseStringValue(const char * s, int * chars_occupied) {
   bool ending_quote_found = false;
   while (char *next_quote = strchr(s, quote_char)) {
     if (*(next_quote+1) == quote_char) {
-  	  s += 2;
+  	  s = next_quote+2;
   	  len--;
   	  continue;
   	}
@@ -184,7 +184,7 @@ char * CSV_Parser::parseStringValue(const char * s, int * chars_occupied) {
   	*chars_occupied += next_quote - base;
   	len += next_quote - base;
 
-  	if ((*(next_quote+1) == ','))
+  	if ((*(next_quote+1) == delimiter))
   		*chars_occupied += 1;
   	else
   		*chars_occupied += strspn(next_quote + 1, "\r\n");

library.properties

@@ -1,5 +1,5 @@
 name=CSV Parser
-version=1.0.0
+version=1.0.1
 author=Michal Borowski <michalmonday17@gmail.com>
 maintainer=Michal Borowski <michalmonday17@gmail.com>
 sentence=CSV Parser for Arduino.

tests/quotes/quotes.ino

@@ -0,0 +1,28 @@
+#include <CSV_Parser.h>
+
+void setup() {
+  Serial.begin(115200);
+  delay(5000);
+
+  // two quote characters next to each other include one quote character into the parsed string itself
+  static char buff[] = "'Ajatempel (UTC)';'Kuupev (Eesti aeg)';'NPS Eesti'\n"
+                          "'1590883200';'31.05.2020''''03:00';'1.96'\n"
+                          "'1590966000';'01.06.2020 02:00';'0.16'";
+  CSV_Parser cp(buff, "Lsf", true, ';', '\'');
+  cp.parseLeftover();
+  cp.print();
+  long *timestamps = (long *)cp[0];
+  char ** dates = (char**)cp[1];
+  float * prices = (float*)cp[2];
+  
+  for (int i = 0; i < cp.getRowsCount(); i++) {
+        Serial.print(timestamps[i]);          Serial.print(" - ");
+        Serial.print(dates[i]);             Serial.print(" - ");
+        Serial.print(prices[i]);           Serial.print(" - ");
+        Serial.println("");
+    }
+
+}
+
+void loop() {
+}