A more detailed log for entropy computations

[JPapir]

Small improvements to the log, produces this kind of output:

## Class n°8 (2 members, H=0.00).

|    | Pattern                                          | Example                                |   Size |   P(Pattern|class) |
|---:|:-------------------------------------------------|:---------------------------------------|-------:|-------------------:|
|  0 | [-voic]t ⇌ [+voic] / X+_i?                       | -                                      |      0 |                  0 |
|  1 | [+str]_ʃti ⇌ [-str]_iːʒ / X*_{l,lʲ,m,n,nʲ,r,rʲ}_ | -                                      |      0 |                  0 |
|  2 | eˀ_ʃti ⇌ ie_iːʒ / {b,m,v}_r_                     | ver_22505: v eˀ r ʃ t i  → v ie r iː ʒ |      2 |                  1 |

## Class summary

Av. conditional entropy: H(pattern|class)=0.25889410165149906

|    |   Size |   H(pattern|class) |
|---:|-------:|-------------------:|
|  0 |   4278 |           0.3019   |
|  1 |    508 |           0        |
|  2 |    196 |           0.114204 |
|  3 |    159 |           0        |
|  4 |    107 |           0        |
|  5 |    104 |           0.811278 |
|  6 |     45 |           0        |
|  7 |      2 |           0        |
|  8 |      2 |           0        |