gagolews/stringi: stringi_1.3.1

1.3.1 (2019-02-10) CRAN [BACKWARD INCOMPATIBILITY] #335: A fix to #314 (by design) prevented the use of the system ICU if the library had been compiled with U_CHARSET_IS_UTF8=1. However, this is the default setting in libicu>=61. From now on, in such cases the system ICU is used more eagerly, but stri_enc_set() issues a warning stating that the default (UTF-8) encoding cannot be changed. [NEW FEATURE] #232: All stri_detect_* functions now have the max_count argument that allows for, e.g., stopping at first pattern occurrence. [NEW FEATURE] #338: stri_sub_replace() is now an alias for stri_sub<-() which makes it much more easily pipable (@yutannihilation, @BastienFR). [NEW FEATURE] #334: Added missing icudt61b.dat to support big-endian platforms (thanks to Dimitri John Ledkov @xnox). [BUGFIX] #296: Out-of-the box build used to fail on CentOS 6, upgraded ./configure to --disable-cxx11 more eagerly at an early stage. [BUGFIX] #341: Fixed possible buffer overflows when calling strncpy() from within ICU 61. [BUGFIX] #325: Made ./configure more portable so that it works under /bin/dash now. [BUGFIX] #319: Fixed overflow in stri_rand_shuffle(). [BUGFIX] #337: Empty search patters in search functions (e.g., stri_split_regex() and stri_count_fixed()) used to raise too many warnings on empty search patters