Remove auto keyword to fix compilation error in MSVC

v1.5.1

remove auto keyword from operators for MSVC (#72)

v1.5: Variadic constructor and enum methods (#71)

* allow variadic constructor declarations

* add variadic constructor declarations

* add enum comparison operator

* add enum value

* add equality and value methods for enum

* bump version to 1.5

v1.4: add setValue for inplace map creation (#70)

* add setValue for inplace map creation

* update version

v1.3.5: add support for ambiguous methods (const / non-const) (#69)

* add support for ambiguous methods (const / non-const)

* fix format

v1.3.4

set fundamental members by value (#68)

v1.3.3: add declaration support for variadic methods (#67)

* add declaration support for variadic methods

* update declarations

* bump version

* check unknown declaration

v1.3.2

use perfect forwarning everywhere (#64)

v1.3.1: use convertArguments for instance too (#63)

* use convertArguments for instance too

* bump version, fix format

v1.3: unify Value and View interface (#62)

* unify Value and View interface

* add missing 'else'

* remove unnecessary include

v1.2.1: Remove unused dependency (#61)

* remove unused dependency

* bump version

* don't link with unused dependency

* don't install unused dependency