Issue type:

[ ] question
[ ] bug report
[x] feature request
[ ] documentation issue

Database system/driver:

[ ] cordova
[ ] mongodb
[ ] mssql
[ ] mysql / mariadb
[ ] oracle
[ ] postgres
[x] sqlite
[ ] sqljs
[ ] websql

TypeORM version:

[x] latest
[ ] @next
[ ] 0.x.x (or put your version here)

@pleerock I remember you taking out connection pool for sqlite at some point. Why did you do it? According to official docs on transactions they create shared locks on the first read. It means there could be several readers, hence several connections. Would you be willing to accept a PR which brings connection pool for SQLite back?