Merge pull request #1874 from berryzplus/feature/fix-version-number

バージョンがv2.4.2.0になる件の対策

Merge pull request #1316 from KENCHjp/release/v2.4.1-fork

Release/v2.4.1

Merge pull request #1310 from KENCHjp/release/v2.4.1-beta3-fork

マージしまーす。

Merge pull request #1282 from beru/release/v2.4.1-beta2-fork

v2.4.1 beta2 リリース準備

Merge pull request #1226 from KENCHjp/release/v2.4.0-fork3

Release/v2.4.0

Merge pull request #1216 from KENCHjp/release/v2.4.0-beta5-fork

Beta5 Release.

Merge pull request #1197 from KENCHjp/release/v2.4.0-beta4-fork2

Release/v2.4.0 beta4

Merge pull request #1117 from KENCHjp/release/v2.4.0-beta3

Beta3リリース用修正

Merge pull request #1096 from KENCHjp/release/v2.4.0-beta-prepare

ベータ２リリース用ヘルプ修正

Merge pull request #1075 from KENCHjp/release/v2.4.0-beta-prepare

Release/v2.4.0 beta prepare