incompatible with NDMF 1.3.0-rc.6 or later

[anatawa12]

Describe the bug
A clear and concise description of what the bug is.

コンパイルエラーが発生します。

Packages/com.github.kurotu.vrc-quest-tools/Editor/NDMF/NdmfComponentRemoverWarning.cs(22,38): error CS0507: 'NdmfComponentRemoverWarning.Localizer': cannot change access modifiers when overriding 'public' inherited member 'SimpleError.Localizer'
Packages/com.github.kurotu.vrc-quest-tools/Editor/NDMF/NdmfComponentRemoverWarning.cs(24,35): error CS0507: 'NdmfComponentRemoverWarning.TitleKey': cannot change access modifiers when overriding 'public' inherited member 'SimpleError.TitleKey'
Packages/com.github.kurotu.vrc-quest-tools/Editor/NDMF/NdmfComponentRemoverWarning.cs(26,35): error CS0507: 'NdmfComponentRemoverWarning.DetailsKey': cannot change access modifiers when overriding 'public' inherited member 'SimpleError.DetailsKey'
Packages/com.github.kurotu.vrc-quest-tools/Editor/NDMF/NdmfComponentRemoverWarning.cs(28,37): error CS0507: 'NdmfComponentRemoverWarning.DetailsSubst': cannot change access modifiers when overriding 'public' inherited member 'SimpleError.DetailsSubst'

To Reproduce
Steps to reproduce the behavior:

1. install com.github.kurotu.vrc-quest-tools 2.1.1
2. install NDMF 1.3.0-rc.6

Expected behavior
No Compilation Error

Screenshots
If applicable, add screenshots to help explain your problem.

Console log
See above

Used assets
No other assets

Environment

• VRCQuestTools version 2.1.1
• Unity 2019.4.31f1
• NDMF 1.3.0-rc.6

Additional context
Add any other context about the problem here.

VersionDefinesでVQT_HAS_NDMF_ERROR_REPORTの定義条件のexpressionが1.3.0-rc.0になってますが、これではx >= 1.3.0-rc.0となってしまい、2.0.0や将来のrcバージョンで壊れてしまいます。

プリリリース版では破壊的変更が発生することがあるので、[1.3.0-rc.0] (== 1.3.0-rc.0を意味する) のようにバージョンを厳しく固定するべきだと思います。