Bchron 4.7.3

Bchron 4.7.2

Bchron 4.7.1

Bchron 4.7.0

Bchron 4.6.1

Bchron 4.6

Fixed two important bugs:

Bchron 4.5

Bchron 4.4

Bchron 4.3

Added some new functions: