[-] Some of the functions were not 'inline', which caused linker erro…

…r in some cases

[-] Microsoft bug, due witch debug build of the program could crash when reading files with non-english characters (https://connect.microsoft.com/VisualStudio/feedback/details/932876/calling-isdigit-with-a-signed-char-1-results-in-a-assert-failure-in-debug-compiles)
[+] Double precision is now set