Increment version number to 2.5.2

Increment version number to 2.5.1

Increment version number to 2.5.0

Increment version number to 2.4.6

Increment version number to 2.4.5

Increment version number to 2.4.4

Switch to pkgdown "auto" development mode

Increment version number to 2.4.3

Increment version number

Increment version number