Customize tts number callout

[asl97]

will probably be done using regex sub, users will need to know regex

allow customizing to include letters in callout. related: #14

note to self, probably something like this: pass 123B to (\d)(\d?)(\d?)([BINGO]?)

and user gives something like $1$2$3 $1 $2 $3 (current default) which produces 123 1 2 3.

take note of leading zeros. use parseInt and then some math:

number = parseInt(span.textContent)
grouping = Math.floor(max/5);
max_grouping = group*5
index = number > max_grouping : number-max_grouping ? Math.floor(number/grouping)
return number.toString()+"BINGO"[index]

[asl97]

Added in 320248cd6cd312ec2b1266a2b665636c279759de

each group of text to be spoken together should be separated by dash -

dash is replaced with space in the TTS

try $4$1$2$3 group-$4 number-$1$2$3 $1-$2-$3,

for N35 it will say N35, group N, number 35, 3 5