User request to disable automatic ligatures on Space Mono

[rokapoz]

User request from Listnr: "Please disable the automatic ligatures on fi and fl (etc.) as it takes away from the point of using a monospace font when they join together. Thanks."

[m4rc1e]

"fi" lig does look bad since it has been crammed into a single letter.

[chrissimpkins]

Added to Q3 to have a look into it.

[davelab6]

We agreed to do this within days of the font's release in 2016...

googlefonts/spacemono#2
googlefonts/spacemono#3
googlefonts/spacemono#4

Viviana please just take care of it :)

[chrissimpkins]

We might use gftools-remap-layout to drop the ligature feature support.

[vv-monsalve]

We'll detach from the current afdko build system and migrate gf builder.

[vv-monsalve]

The migration required extra work to fix the sources. Roman is ready. Italic to be done. Development followed in this branch.