Roadmap for v0.2.23

[uki00a]

• [x] add support for ormconfig.yml (#109)
• [ ] add support for ormconfig.xml (#110)
• [x] Add support for .env (#101)
• [ ] Reimplement RedisQueryResultCache using deno-redis (#111)
• [ ] Fix the remaining bugs in PostgresDriver (#18)
• [ ] Merge tag typeorm/0.2.23 into this repository (#32)
• [x] Make this module not to depend on unstable runtime APIs (#96)
• [ ] Make ColumnOptions.type option required except for @CreateDateColumn and @UpdateDateColumn
• [x] Avoid downloading unnecessary drivers (#98)
• [x] Replace x/sha256 with std/hash/sha256.ts (#102)
• [ ] Update docs