Solved I2C bitrate crash and clockstreching.

@Frida now I found some time to test this nice modifications

step one build a version with your modification and run some simple tests

I2C1.setup({sda:D4, scl:D5, bitrate:100000});
=undefined

>I2C1._options
={ "sda": D4, "scl": D5, "bitrate": 100000 }
> 

read data from eeprom

>I2C1.readFrom(0x62,9);
=new Uint8Array([48, 50, 48, 49, 48, 48, 48, 50, 50])
>I2C1.readFrom(0x62,9);
=new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255, 255])

hmm ?

>I2C1.readFrom(0x62,9);
=new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255, 255])
>I2C1.writeTo(0x62,1);
=undefined
>I2C1.readFrom(0x62,9);
=new Uint8Array([48, 50, 48, 49, 48, 48, 48, 50, 50])
> 

can not read twice, have to send dumy writeTo to read again ?!

i2cget -y 2 0x62 0 has no problems ......

any comments or hints ?