Update ios_error.h

Updated version number in Package.swift

patch 8.1.2238: error in docs tags goes unnoticed

Problem:    Error in docs tags goes unnoticed.
Solution:   Adjust tags build command. (Ken Takata, closes vim#5158)

patch 8.1.2237: mode() result depends on whether CURSOR_SHAPE is defined

Problem:    Mode() result after usign "r" depends on whether CURSOR_SHAPE is
            defined. (Christian Brabandt)
Solution:   Move the #ifdef to only skip ui_cursor_shape().

patch 8.1.2236: ml_get error if pattern matches beyond last line

Problem:    Ml_get error if pattern matches beyond last line.
Solution:   Adjust position if needed. (Christian Brabandt, closes vim#5139)

patch 8.1.2235: "C" with 'virtualedit' set does not include multi-byt…

…e char

Problem:    "C" with 'virtualedit' set does not include multi-byte char.
Solution:   Include the whole multi-byte char. (Nobuhiro Takasaki,
            closes vim#5152)

patch 8.1.2234: get_short_pathname() fails depending on encoding

Problem:    get_short_pathname() fails depending on encoding.
Solution:   Use the wide version of the library function. (closes vim#5129)

patch 8.1.2233: cannot get the Vim command line arguments

Problem:    Cannot get the Vim command line arguments.
Solution:   Add v:argv. (Dmitri Vereshchagin, closes vim#1322)

patch 8.1.2231: not easy to move to the middle of a text line

Problem:    Not easy to move to the middle of a text line.
Solution:   Add the gM command. (Yasuhiro Matsumoto, closes vim#2070)

patch 8.1.2230: MS-Windows: testing external commands can be improved

Problem:    MS-Windows: testing external commands can be improved.
Solution:   Adjust tests, remove duplicate test. (closes vim#4928)