I started using GitFlow more or less two years after Vincent Driessen introduced his proposal in 2010. Since then, there has been many times in which either me or another fellow developer has faced some issues with it.
A lot of attention was brought into functional programming when Swift was announced in WWDC 2014. That wasn’t really new. Bringing these concepts to your day-to-day programming has been a trend in general. But within the Apple ecosystem in particular, Swift made everyone take it more seriously.
I was not particularly excited when fastlane started to get attention from the community. I agreed it was a cool project, but it was not solving any actual problem I had.