journal: render markdown content + title metadata

this has a really basic template and whatnot at the moment, so
styling/etc isn't done, but this is maybe the last major piece before I
could actually see pushing this onto the site

requirements/requirements-dev.txt

@@ -12,6 +12,7 @@ flask==1.1.1              # via -r requirements/requirements.in
 importlib-metadata==1.5.0  # via pluggy, pytest
 itsdangerous==1.1.0       # via flask
 jinja2==2.11.1            # via flask
+markdown==3.2.1           # via -r requirements/requirements.in
 markupsafe==1.1.1         # via jinja2
 mccabe==0.6.1             # via flake8
 more-itertools==8.2.0     # via pytest
@@ -28,3 +29,6 @@ versioneer==0.18          # via -r requirements/requirements-dev.in
 wcwidth==0.1.8            # via pytest
 werkzeug==1.0.0           # via flask
 zipp==3.1.0               # via importlib-metadata
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools

requirements/requirements.in

@@ -1 +1,2 @@
 Flask                       # general purpose web service and web server stuff
+Markdown                    # markdown rendering in templates

requirements/requirements.txt

@@ -8,5 +8,9 @@ click==7.0                # via flask
 flask==1.1.1              # via -r requirements/requirements.in
 itsdangerous==1.1.0       # via flask
 jinja2==2.11.1            # via flask
+markdown==3.2.1           # via -r requirements/requirements.in
 markupsafe==1.1.1         # via jinja2
 werkzeug==1.0.0           # via flask
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools