Release fbtoggl v0.4.1

(cargo-release) fbtoggl version 0.4.1

Release fbtoggl v0.4.0

(cargo-release) fbtoggl version 0.4.0

Release fbtoggl v0.3.1

(cargo-release) fbtoggl version 0.3.1

Release fbtoggl v0.3.0

(cargo-release) fbtoggl version 0.3.0

Release fbtoggl v0.2.0

(cargo-release) fbtoggl version 0.2.0

Release fbtoggl v0.1.2

[release] 0.1.2

Release fbtoggl v0.1.1

[release] 0.1.1

Release fbtoggl v0.1.0

[doc] enhance Cargo.toml