There is nothing in it..............
A fair analysis: they went 51.86% / 48.14% for Leave in 2016, and in 2017, 21,380 (50.84%) for Tories/UKIP vs 20,677 (49.16%) for Lib Dems/Labour/Plaid. Now the gap is 50.22% vs 49.88%, so we can say that there's a swing of 1.76% to Remain.
Taken nationwide, it would mean 50.13% for Leave and 49.87% for Remain.
Nothing in it at all. There isn't a huge swing towards Remain, nor is there any clear support for No Deal.
The only clear thing is that there's no way Boris can call an election now, especially if the Lib Dems and Plaid are willing to put single Remain candidates in Wales and with the SNP riding high in Scotland.