msgs 5-7 still TODO
WIP, untested

to store Bob's PeerState directly in PeerTestState
prep for SSU2

Packet building, fix peer test block
Not hooked in

Add min packet size constants and notes
Don't attempt to decrypt a packet as a new inbound session if too small
Remove unused payload[] in IES2, now decrypted in-place
Log level tweaks in Establisher

Rotate the log before we hit the limit, not after

Limit max MTU for HE addresses

even if they would fit in the MTU uncompressed,
to save bandwidth and room for other blocks

Save data messages received before or immediately after session confirmed
by queueing them for processing after the PeerState2 is created.
The fragments for the first I2NP message from Alice to Bob are frequently lost,
this will hopefully fix it.
Not fully tested, needs wider network testing.

Avoid relaying until it's implemented:
Don't use SSU2 for an SSU address with introducers (fixes NPE)
Don't connect to SSU2 address without host/port
Don't ask for relay tag
Log tweaks

Fix length calculation to see if new token block will fit in session confirmed
Extend timeout after sending retry
Fix retx timer for sess req after sending token req
Remove dup call to confirmedPacketsSent()
Cancel ack timer when sending acks
Include intro key in firewalled addresses too
Use SSU2 version of ping packet for SSU2 peers
Reduce max padding
Log tweaks

Fix packet length for retransmitted handshake messages
Expire pending acks

round timestamp in Session Created

Clean up and optimize ack handling
Log tweaks and javadocs

MTU and related fixes:
Fix max fragment size
Fix max space for acks
Fix max packet size
Pull MTU from best address in Session Confirmed
Pass MTU from establish state to peer state
Use SSU2 min/default/max MTU in PeerState
Stop looping when out of space in OMF (SSU 1 too)

Correctly calculate skew after retry in establish state
Pass calculated skew from establish state to peer state
Round time in DateTime block
Periodically send DateTime block
Handle DateTime block in peer state

that does not require router.jar
and rework other classes as necessary

Log tweaks

so it doesn't null out the contained message.
Required for SSU2.
Unrelated TunnelDispatcher cleanup done while trying to find the problem.

Fix deadlock in AckTimer
Enforce token in IES2
Increase bitfield sizes in PS2
Log tweaks

Handle acks
Set ack timer
Retransmit session confirmed
Fix bitfield constructor when no ranges

Add method to put additional blocks in data messages
Send and handle termination blocks

after initial testnet testing

Use correct intro key for Session/Token request
Fix state management in EstablishmentManager, OES2, IES2
Fix next send time during handshake
Fix header decryption in PacketHandler
Add additional packet checks in IES2 handling
Remove expired IES immediately (SSU1 also)
Failsafe sleep in EstablishmentManager on exception
Remove dup requestSent() calls
Don't release packet in PS2
Log tweaks and javadocs

Only affects NTCP for now.
This bug had little impact when both transports were enabled,
but significantly harmed connectivity and tunnel building for NTCP2-only.
Decrease unreachable cache time in testnet
Make cache cleaner a little more efficient

Increase memory