Bumped version to v3.0.0

Bump version to v3.0.0-rc.2 (axuno#247)

Correct latest version

Bumped version to v2.7.2 (axuno#237)

* Bumped version to 2.7.1
* ConditionalFormatter processes unsigned numbers in arguments correctly.
* JsonSource: Corrected handling of null values in NewtonSoftJson objects.

Implemented object pools und thread safety settings (axuno#229)

Bump version to v3.0.0-alpha.4 (axuno#222)

Backport fixes from v3 (axuno#213)

Bumped version to 2.7.1

Back-ported bug fixes from v3.0.0-alpha:
axuno#179 - Corrected DualFromZeroToTwo plural rule
axuno#211 . Illegal placeholder characters that are not 8-bit, will no more throw unexpected ThrowByteOverflowException

Bumped version 3.0.0-alpha.3 (axuno#204)

Bumped version to 3.0.0-alpha.3

Now targeting frameworks netstandard2.0, netstandard2.1, net461

Allow nullable args in all Format methods (axuno#196)

* Opposed to `string.Format` null(able) arguments are allowed.
* Changes effect classes Smart and SmartFormatter
* Bump version to 3.0.0-alpha.2

Updated CHANGES.md with performance test links