phpecc v1.0.0

Adds PHP8 support (doesn't remove support for older versions yet)

See doc/release-notes-1.0.0.md for more info.

Minor release containing fixups following wycheproof testing

v0.4.7: minor release backported checks for PublicKey constructor

Fix off by one bug in signature verification

Minor release, caret version range for phpasn1 and related

Release v0.4.5

PHPECC v0.5.0

This is a major release for phpecc, containing
security fixes, performance enhancements, an upgrade
to PHP7, and more.

For full release notes please check the git repo:
https://github.com/phpecc/phpecc/blob/master/doc/release-notes-0.5.0.md

phpecc v0.4.4

The release notes can be found [docs/release-notes-0.4.4.md](here).

PHPECC v0.3.2

This is a security patch for the ECDH class, which
up until now never validated that input public key
points were on the same curve as the private key.

The issue is NOT one where every user of ECDH is in
trouble - depending on the code path, you may not
be at risk at all - however it is still recommended
you upgrade to v0.3.2 for this fix.

v0.4.3 is a minor release for the library.

It adds support for the curve secp192k1,
and adds a much greater set of fixtures
for `SpecBasedCurveTest`

   - [(#193)](#193) [5dc5112] [Backport] Add secp192k1
   - [(#197)](#197) [2cc41f4] [Backport] Backport: 0.4: FIPS tests 2 & 4

Thanks to everyone who directly contributed to this release:

 - LinBo len (LinBoLen)
 - Thomas Kerin (afk11)