Log message:
tex-*: update to texlive 2020 versions

tex-doclicense{,-doc} to 1.10.1
tex-etoolbox{,-doc} to 2.5h
tex-l3backend{,-doc} to 2020
tex-l3experimental to 2020
tex-l3kernel{,-doc} to 2020
tex-l3packages{,-doc} to 2020
tex-latexbug{,-doc} to 1.0g
tex-lualibs{,-doc} to 2.70
tex-tlshell{,-doc} to 2020

Log message:
tex-*: add TEXLIVE_UNVERSIONED=yes

Log message:
tex-l3experimental: update to 2019.51546

## Fixed
- Clipping of paths by `l3draw`
## Added
- New `l3graphics` module
### Fixed
- Missing `\scan_stop:` in benchmark code

Log message:
tex-l3experimental: update to 2019

- Clipping of paths by `l3draw`

Log message:
tex-l3kernel{,-doc},tex-l3experimental: update to 2018.49853

## [2019-01-28]

### Added

- Global versions of box affine functions, e.g. `\box_grotate:Nn`
- Global versions of box size adjustment functions
- `\box_(g)set_eq_drop:NN`, `\(h|v)box_unpack_drop:N`
- `\file_get:nnN` and `\file_get:nnNTF`
- Experimental functions `\sys_shell_get:nnN` and `\sys_shell_get:nnNTF`

### Changed

- `\char_generate:nn` now always takes exactly two expansions
- Move `\prg_generate_conditional_variant:Nnn` to stable
- Renamed experimental `\box_trim:Nnnnn` and `\box_viewport:Nnnnn` as
  `\box_set_trim:Nnnnn` and `\box_set_viewport:Nnnnn`, respectively

### Deprecated

- `\box_(g)set_eq_clear:NN`, replaced by `\box_(g)set_eq_drop:NN`
- `\(h|v)box_unpack_clear:N`, replaced by `\(h|v)box_unpack_drop:N
- `\tl_(g)set_from_file(_x):Nnn`, replaced by `\file_get:nnN`

### Fixed

- Scope treatment of `\box_set_dp:N`, _etc._
- In (u)platex: detection of spaces in `\tl_rescan:nn` and related
  functions

### Removed

- Experimental function family `\tl_(g)set_from_shell:(N|c)nn`
  (replaced by `\sys_shell_get:nnN`)

Log message:
tex-l3experimental: update to 2018.49205

changes unknown

Log message:
tex-l3experimental: update to 2018

Release 2017-12-05

 - Fix loading of l3str-format

 - Fix handling of \iow_newline: in \iow_wrap:nnnN

 - \cs_generate_variant:Nn now warns on incorrect variant
   relationships

 - Better recovery by \dim_set:Nn, etc., if passed
   skip expressions

 - Better handling of global/local consistency in variable
   setting

 - String mappings now include space characters

 - Revise l3doc to no longer require "[aux]" (deprecated) or
   "[int]" in code mark up: "[int]" is retained for cases where
   auto-detection of internals is not possible

 - Deprecate \token_new:Nn

 - Documentation improvements

Log message:
tex-l3{kernel,packages,experimental}{,-doc}: update to 2017.45340

- Rename \box_use_clear:N to \box_use_drop:N as this command has
  non-standard grouping behaviour
- New \inteval command in xfp
- New \c_catcode_active_space_tl
- Fix bug with color code when \current at color is not a simple
  string
- Fix behaviour of \sys_rand_seed: in engines without the
  underlying random number primitives
- Allow only integer powers for negative bases in floating point
  expressions
- Various documentation improvements

Log message:
Update tex-l3{experimental,kernel,packages}{,-doc} to 2017.44864

 - New \hbox_set_to_wd:Nnw and \vbox_set_to_ht:Nnw functions
 - Revised l3file module to give better defined
   path/file/extension split
 - New experimental functions in l3file: \file_input_stop:,
   \file_get_mdfive_hash:nN, \file_get_size:nN and
   \file_get_timestamp:nN; currently XeTeX does not support
   getting file size/timestamp
 - New experimental \mode_leave_vertical: as a code-level
   equivalent of \leavevmode
 - New experimental support for shell escape in l3sys module
 - New mechanism for checking variable declarations locally:
   see option "enable-debug" and
   \debug_check_declarations_(on|off):
 - More invalid regex patterns trapped with warning
 - More regex documentation examples
 - Bug fix for \tl_mixed_case:n(n) with pdfTeX when the first
   character is outside the ASCII range
 - Fix nesting of selective setting in l3keys

Log message:
Update to TeXlive 2017

  Updated print/tex-koma-script to 3.23
  Updated print/tex-kotex-oblivoir{,-doc} to 2.1.8
  Updated devel/tex-l3experimental to 2017
  Updated devel/tex-l3kernel{,-doc} to 2017
  Updated devel/tex-l3packages{,-doc} to 2017
  Updated print/tex-latex{,-doc} to 20170101.1
  Updated textproc/tex-latexdiff{,-doc} to 1.2.0
  Updated print/tex-leaflet{,-doc} to 1.1b
  Updated fonts/tex-libertine{,-doc} to 5.3.0.43603
  Updated devel/tex-lualibs{,-doc} to 2.5
  Updated fonts/tex-luaotfload{,-doc} to 2.8.2
  Updated print/tex-luatex{,-doc} to 1.0.4