gi-ibus-1.5.7: ChangeLog.md

### 1.5.7

+ Bump base lower bound

### 1.5.6

+ Bump base lower bound

### 1.5.5

+ Relax constraint on text

### 1.5.4

+ Update to haskell-gi(-base)-0.26

### 1.5.3

+ Update to haskell-gi(-base)-0.25

### 1.5.2

+ Upgrade to haskell-gi-base-0.24

### 1.5.1

Initial release