🔖 Update version to 1.2.0
Several minor features have been added to this release, and a few
minor fixes.
This contains the following changes:
* Updates `underlying_type` to SFINAE if type is not an `enum` (#18)
* Adds `is_[nothrow_]invocable_r`, which was missing from previous
  release
* Fixes some inline visibility bugs surrounding `optional`
* Adds conditionally explicit `span` constructors (#21)
  * This is potentially a breaking change -- however this is not bumping
    the major version of this library since the previous implementation
    was following the *experimental* API of `span` -- which is not the
    concrete version
* Fixes /W4 warnings for MSVC

🔖 Update version to 1.1.0
With issue #16 being closed successfully, it's time for a new version
bump and release to be created.
This contains the following changes:
* Fixes `bpstd::get` for `tuple` types on gcc-4.9, which otherwise may
  break in some circumstances
* Implements multiple-variant visitation

🔖 Update version to 1.0.1
The patch version number has been bumped on this library so that a
new release containing the most recent bug fix may be released.

🔖 Update version to 1.0.0
The completion of `variant` marked the last major milestone required
for the 1.0.0 release of Backport! With this being completed, the
various versioned files in this repository is being updated in
preparation of a 1.0.0 release

Pre-release: v0.2.0
Change log:
Fixes:
* Fixed is_final definition, which is not available until C++14
* Suppressed and fixed cppcheck warnings
Features:
* Added make_reverse_iterator support
* Added uncaught_exceptions
* Added support for addressing tuples by type
* Added user-defined literals for std::complex
* Added visibility attributes on all definitions
* Added initial implementation of variant

🔖 Update version to 0.1.1
To prepare for a bugfix release, the versions have been updated to
0.1.1 in both the CMakeLists.txt and conanfile.py

🔖 Bump version number for release
This library is ready for 0.1.0 pre-release, which contains many of the
utilities available in the previous release now working correctly for
MSVC.

📇 Update links in README
The repository was recently renamed from bpstd -> BackportCpp.
The links in the README have been updated to reflect this change.
Additionally, new badges have been added to the README