Ignore "USING ..." (e.g. "USING BTREE")

If the index name on a fulltext key contains the string `key`, then the `.+` pattern greedily matches too far into the string and produces an invalid line. This fix will correctly replace `  FULLTEXT KEY` with `  KEY` regardless of the contents of the index name.

Match just "fulltext key" and not ".* key"

…tax)

…lite3 and not just mysql2sqlite

… SQLin

add: support for _utf8mb3 (discouraged by MySQL but still present in real DBs)

…ect the "direct pipe" method as noted in the README.

Direct piping to sqlite3 is typically how this script will be used since you get a sqlite database file as a result.

…instructions

doc: improve built-in instructions on how to use this script

…ent skipping names with the word DATABASE in them

skip only if the word CREATE is followed by the word DATABASE