update template's TODO file

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+BUG: synth still seems to continue even if first build (verilog compile) fails
+
+For bitfile/mcs targets, add an echo that they are being created (slow).
+
+requests from AJ:
+    anything related to not rebuilding all the coregen when not necessary.
+
+    e.g. want a make clean equivalent to removing the build dir but not the
+    cores. This should actually be the default behavior, with different
+    operator for nixing the cores.
+
+    not auto rebuilding the cores when switching branches/commits if not
+    strictly necessary. Because git touches all the files, this may be
+    difficult.
+
+    make isim/simulate will run to completion even if there were errors on
+    the build.
+
+    In the case of make isim, isim will load and run the previously valid
+    simulation. Unless you happen to see the error go by in the build log,
+    you will unknowingly be simulating your previous build, whereas your
+    current build failed to compile.
+
+    The solution is to have make simulate begin by deleting the previous
+    simulation executable, so that it must successfully create a new one
+    before loading isim.
+
+--- later...
+
+effort levels seem high by default:
+    Overall effort level (-ol):   High 
+    Router effort level (-rl):    High 
+    -> 'make quicksynth' ?
+
+add support for post-synthesis simulation
+
+autoimpact (needs testing)
+    impact -mode bscan -b build/sp605.bit -port auto -autoassign (needs testing)
+
+Add linting to tests (aka, tb/*_tb.v)
+
+'lint' should use vfiles, not -I./hdl