Gftools

Changes since previous release:

- Emergency fix to include lang package data correctly 0d1799b80e3bdef21bc6a6e7bdf243f029c8e97e

Changes since Previous release:

- add-font: retain fallbacks 463
- run update_data.sh abc72b98246e3a9393debdd4e040072486be4091
- add-font/lang-support: gen language fields 460
- add-font: support multiple categories 451
- gen-push-lists: keep manually entered dirs 462
- use glyphsets python module 0110c9003f48ae79d484357075a56928d6f82d36
- push-stats: include tables for server pushes 452
- Removed deprecated signs in GF Latin Core 450
- Resolve conflicts with protos f5102c5988a0039c9fc2c336d5d629f95f4b854f

Changes since previous release:

- cleanup dependencies 443, 445
- push-stats: Add commit table 447
- gen-push-lists: Added 448

Changes since previous release:

- Add tutorial link for Greek Polytonic 49cfb9fffeb1154a1660018e69fe606b5dbf35a8
- Update-nameids: added nameID 10 433
- Update fonts_public.proto 434
- qa: do not require gf-api-key 435

`builder`

- drop babelfont 436
- save fonts after running vttLib 437

Changes since previous release:

- Unpin pygit2 https://github.com/googlefonts/gftools/commit/0dc63cb77e4858fd288ac7eb19a411183c2a4622
- Drop Python 3.6 https://github.com/googlefonts/gftools/pull/430

`Builder`

- Merge and Compile VTT source files using vttLib https://github.com/googlefonts/gftools/pull/419

Change since previous release:

- Don't add dummy DSIG by default 410
- Drop Debg table on fix 411
- push-stats: Split families into new and upgraded, use calendars for date pickers 413
- fix gftools non-hinting link 421
- fix-family: add option to rename family 428

`Builder`

- Don't gen_stat if there were no variable fonts 417
- Run decompose filters as pre filters 425