Log message:
tomlplusplus: update to 3.4.0.

## v3.4.0

#### Fixes

-   fixed `value_flags` not being preserved correctly when inserting into tables \ 
and arrays (#108) (@LebJe)
-   fixed `toml::value::flags()` not being cleared when `std::move`-ing a value
-   fixed error in README (#195) (@andrewkcorcoran)
-   fixed compiler error when using NVCC (#198) (@thompsonnoahe)
-   fixed `noexcept(...)` sometimes being incorrectly derived on `for_each()`
-   fixed `for_each()` compilation error on GCC <= 7 (#197) \ 
(@sagi-ottopia, @damirbarr)
-   fixed `FLT_RADIX` check getting broken by Intel MKL headers (#202) (@iago-lito)
-   fixed keys containing `\t` incorrectly formatting as bare keys \ 
(@jasmine-zhu, @arp242)
-   fixed keys containing `\t` and `\n` not round-tripping correctly (@arp242)

#### Additions

-   added support for using enums with `value_or()`

#### Changes:

-   renamed header files to have `.hpp` extension (`toml.h` is still present for \ 
backwards-compatibility)

#### Build system:

-   fixed meson builds with `-Ddefault_library=static` having hidden symbols on \ 
GNU compilers (#201) (@vlad0x00)

Log message:
devel: Adapt packages to use USE_(CC|CXX)_FEATURES

Log message:
*: remove all instances of GCC_REQD where my name is the most recent in
"cvs annotate" (part 1)

Hopefully this commit can be reviewed later if a better replacement
for GCC_REQD is committed.

Log message:
tomlplusplus: Require a C++17 compiler.

Log message:
tomlplusplus: update to 3.3.0.

Now installs a library.

## v3.3.0

#### Fixes:

-   fixed null pointer dereference in parser when exceptions are disabled (#169) \ 
(@ncaklovic)
-   fixed spurious warnings in MSVC 19.34
-   fixed `toml::parse_file()` on windows for non-ASCII paths
-   fixed a spurious table redefinition error (#187) (@jorisvr)
-   fixed UB edge-case in integer parsing (#188) (@jorisvr)
-   fixed some build issues with Apple-flavoured Clang (#189) (@eddelbuettel)

#### Additions:

-   added `toml::format_flags::terse_key_value_pairs`
-   added `TOML_ENABLE_FLOAT16` config (#178) (@Scrumplex)

#### Removals:

-   removed automatic detection of `_Float16` (you must explicitly set \ 
`TOML_ENABLE_FLOAT16` to enable it) (#186) (@benthetechguy)

#### Build system:

-   re-wrote the meson scripts to fix a number of issues (#185, #186) \ 
(@Tachi107, @benthetechguy)
-   increased the minimum required meson version to `0.61.0`

Log message:
tomlplusplus: update to 3.2.0.

## v3.2.0

#### Fixes:
- fixed `[dotted.table]` source columns sometimes being off by one (#152) (@vaartis)
- fixed spurious `Wnull-dereference` warning on GCC (#164) (@zaporozhets)
- fixed `print_to_stream` ambiguity for `size_t` (#167) (@acronce)

#### Additions:
- added value type deduction to `emplace()` methods
- added `toml::path` utility type (#153, #156, #168) (@jonestristand, @kcsaul)
- added config option `TOML_CALLCONV`
- added missing relational operators for `source_position`

#### Changes:
- relaxed cvref requirements of `is_homogeneous()`, `emplace()`, \ 
`emplace_back()`, `emplace_hint()`
- relaxed mantissa and digits10 requirements of extended float support

Log message:
tomlplusplus: update to 3.1.0.

## [v3.1.0]

#### Fixes:
- Fixed potential segfault when calling `at_path()` with an empty string
- Fixed UB in internal unicode machinery (#144) (@kchalmer)
- Fixed a number of spurious warnings with Clang 10 (#145, #146) (@chronoxor)

#### Additions:
- Added `toml::array::for_each()`
- Added `toml::table::for_each()`
- Added config options `TOML_EXPORTED_CLASS`, `TOML_EXPORTED_MEMBER_FUNCTION`, \ 
`TOML_EXPORTED_STATIC_FUNCTION` & `TOML_EXPORTED_FREE_FUNCTION`
- Added support for escape sequence `\e` when using `TOML_ENABLE_UNRELEASED_FEATURES`
- Added support for more unicode in bare keys when using \ 
`TOML_ENABLE_UNRELEASED_FEATURES`

#### Removals/Deprecations:
- Deprecated old `TOML_API` option in favour new `TOML_EXPORTED_X` options
	(it will continue to work as it did before if none of the new function export \ 
options are defined)

#### Build system:
- Meson: Added `compile_library` option (@Tachi107)
- Meson: Added `ubsan_tests` and `ubsan_examples` options
- Meson: Use system dependencies where available when building tests (@Tachi107)

Log message:
tomlplusplus: update to 3.0.1.

## 3.0.1

This is a single-bugfix release to fix an ODR issue for people using header-only \ 
mode in multiple
translation units. If you aren't seeing linker errors because of \ 
`toml::array::insert_at()`,
this release holds nothing of value over v3.0.0.

## 3.0.0

This release will be a major version bump, so it's ABI breaks all around.