feat: separated forced transpilation from --multiprocess

[samgermain]

• enables calling build/transpile.js with --multiprocess without forcing the transpilation of all exchanges
• npm commands using --multiprocess had --force added as well

[carlosmiei]

did you test it?

[samgermain]

did you test it?

I did, whats the problem

did you test it?

I did but I missed that, sorry, it's fixed

% node build/transpile.js --multiprocess  
starting 12 new processes... (parallelizeTranspiling @ transpile.js:2942)
Already transpiled alpaca.ts (transpileDerivedExchangeFile @ transpile.js:1531)
Already transpiled bitbns.ts (transpileDerivedExchangeFile @ transpile.js:1531)
Already transpiled bitso.ts (transpileDerivedExchangeFile @ transpile.js:1531)
Already transpiled cex.ts (transpileDerivedExchangeFile @ transpile.js:1531)
Already transpiled cryptocom.ts (transpileDerivedExchangeFile @ transpile.js:1531)
Already transpiled hollaex.ts (transpileDerivedExchangeFile @ transpile.js:1531)
Already transpiled kuna.ts (transpileDerivedExchangeFile @ transpile.js:1531)

% node build/transpile.js --multiprocess --force
starting 12 new processes... (parallelizeTranspiling @ transpile.js:2942)
{ force: true } (transpile.js:2982)
Transpiling from bequant.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from binancecoinm.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from binanceusdm.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from binanceus.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from ace.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from bitbay.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from bitbank.ts (transpileDerivedExchangeFile @ transpile.js:1511)
Transpiling from bit2c.ts (transpileDerivedExchangeFile @ transpile.js:1511)

[samgermain]

AppVeyor failing for no reason
Unrelated Travis build failure