apply toLower before titlecase

[kepler471]

Addresses #53 .

I have applied toLower before titlecase.

There may be cleaner ways to do this, but I had to pack and unpack for the data to be Text, for toLower.

& T.pack
& T.toLower
& T.unpack

A potential issue may be with toLower changing the string. From the source,

The result string may be longer than the input string. For
instance, "İ" (Latin capital letter I with dot above,
U+0130) maps to the sequence "i" (Latin small letter i, U+0069)
followed by " ̇" (combining dot above, U+0307).

[kepler471]

Here's a test file this.

[kepler471]

This will blindly change all text, so if a suggestion is/contains an acronym, or something else intentionally fully capitalised, then the result will be need to be edited.

The change could instead be a new button, which lowers and titlecases the new filename. In this way, the user can decide to format the text only if they need to.